I've compiled a list of UK ultramarathons, ordered by distance, date, or region. The British super-regions correspond roughly to the MemoryMap split illustrated below. Although I try to be as accurate and exhaustive as possible, there may be inaccuracies, mistakes and races missing. Please let me know if you spot any of them.
UK regions map

Sort by: distance | date | region


26.2+ to 30.0 miles

trailSouthern England
3 Forts Marathon
http://www.threefortsmarathon.org.uk
Distance: 27.0 miles (43.5km)
Ascent: 3,450 ft
Time limit: 6h
Best time: 03:07:03
Usual date: May
my race report
done
trailWales
The Pumlumon Challenge
http://www.pumlumon.org.uk/challenge.php
Distance: 27.0 miles (43.5km)
Ascent: 5,500 ft
Usual date: September
trailNorthern England
Grantham Canal Run
http://www.rorycoleman.co.uk/Grantham%20...
Distance: 29.3 miles (47.2km)
Usual date: February
trailSouthern England
Downland Ultra Challenge
http://www.haywardsheathharriers.co.uk/n...
Distance: 30.0 miles (48.3km)
Usual date: July
trailCentral England
The JW Ultra
http://www.ultrarunner.co.uk/index.php?o...
Distance: 30.0 miles (48.3km)
Usual date: September
trailNorthern England
Hardmoors 30
http://www.hardmoors110.org.uk
Distance: 30.0 miles (48.3km)
Time limit: 7h
Best time: 04:20:00
Usual date: January
trailNorthern Scotland
Lochalsh Dirty 30 Challenge
http://www.lochalsh-trails.co.uk
Distance: 30.0 miles (48.3km)
Time limit: 24h
Usual date: June
trailCentral England
Wye Ultra Marathon
http://www.blacksheepsports.co.uk/public...
Distance: 30.0 miles (48.3km)
Usual date: March
trailSouthern England
Doyen of the Downs
http://www.extremerunning.org/index.php?...
Distance: 30.0 miles (48.3km)
Time limit: 7h
Usual date: December


30.0+ to 40.0 miles

roadSouthern Scotland
Fife AC 50K
http://bcruickshank.brinkster.net/page6....
Distance: 31.1 miles (50.0km)
Best time: 03:02:27 ?
Usual date: May
roadCentral England
Boddington 50K
http://www.beyondthelimitations.co.uk/4....
Distance: 31.1 miles (50.0km)
Best time: 03:06:07
Usual date: August
roadSouthern England
London Ultra 50K
http://www.rorycoleman.co.uk/london ultr...
Distance: 31.1 miles (50.0km)
Usual date: February
trailSouthern England
Salisbury 54321
http://salisburyfirestation.info/
Distance: 31.1 miles (50.0km)
Usual date: August
trailNorthern England
Manx Mountain Marathon
http://www.manxfellrunners.org/index.php...
Distance: 31.5 miles (50.7km)
Ascent: 8,000 ft
Best time: 04:22:45
Usual date: April
roadSouthern England
Dartmoor Discovery
http://www.hmca.org.uk/marathon/
Distance: 32.0 miles (51.5km)
Usual date: June
trailSouthern England
Moonlight Challenge
http://50milechallenge.co.uk/moonlight.h...
Distance: 32.8 miles (52.7km)
Time limit: 8h
Usual date: February
trailSouthern England
Marlborough Downs Challenge
http://www.marlboroughrunningclub.co.uk/...
Distance: 33.0 miles (53.1km)
Best time: 4:06:28
Usual date: May
trailNorthern England
Osmotherley Phoenix
http://www.runfurther.com/media/pdf_race...
Distance: 33.0 miles (53.1km)
Ascent: 4,000 ft
Usual date: July
trailNorthern England
Wuthering Hike - Haworth Hobble
http://www.kcac.co.uk/?page_id=199
Distance: 33.0 miles (53.1km)
Ascent: 4,400 ft
Best time: 03:43:24
Usual date: March
trailNorthern England
Calderdale Hike
http://www.sowerby-bridge.org.uk/scouts/...
Distance: 34.0 miles (54.7km)
Usual date: April
roadCentral England
Draycote Water 35
http://www.krrac.info/DW_Info.asp
Distance: 35.0 miles (56.3km)
Best time: 03:42:22
Usual date: February
trailCentral England
Northants Ultra Shires And Spires
http://gobeyondultra.co.uk/events/northa...
Distance: 35.0 miles (56.3km)
Time limit: 9h
Usual date: May
trailNorthern England
Round Ripon Ultra
http://gobeyondultra.co.uk/events/round_...
Distance: 35.0 miles (56.3km)
Time limit: 10h
Usual date: October
loopWales
Barry 40 mile track race
http://www.lescroupiersrunningclub.org.u...
Distance: 40.0 miles (64.4km)
Time limit: 6h
Best time: 04:08:16
Usual date: March
trailNorthern England
The Four Inns Walk
http://www.dynarx.eclipse.co.uk/fourinns...
Distance: 40.0 miles (64.4km)
Best time: 07:19:00
Usual date: April
trailNorthern England
High Peak 40 Mile Challenge
http://www.highpeak40.co.uk
Distance: 40.0 miles (64.4km)
Best time: 05.31.08 ?
Usual date: September
Not to be confused with the High Peak Marathon
trailNorthern England
High Peak Marathon
http://www.highpeakclub.union.shef.ac.uk...
Distance: 40.0 miles (64.4km)
Best time: 09:21:56 ?
Usual date: March
Not to be confused with the High Peak 40 Mile Challenge
trailSouthern England
Tring 2 Town
http://www.tring2town.com
Distance: 40.0 miles (64.4km)
Best time: 05:19:00
Usual date: February
trailSouthern England
Compton Downland Challenge 40 miles (Full Fat Forty)
http://www.comptonharriers.co.uk/Challen...
Distance: 40.0 miles (64.4km)
Ascent: 3,900 feet
Usual date: April


40.0+ to 50.0 miles

trailNorthern England
Lyke Wake
http://www.lykewakewalk.co.uk/
Distance: 42.0 miles (67.6km)
Usual date: July
trailWales
Newtown Rotary Club's Across Wales Walk
http://newtown-rotary.org.uk/site/node/9...
Distance: 42.0 miles (67.6km)
Usual date: June
not to be confused with the "Across Wales Walk"
trailSouthern Scotland
Devil O' The Highlands
http://devilothehighlandsfootrace.co.uk/
Distance: 43.0 miles (69.2km)
Time limit: 12h
Best time: 05:22:54
Usual date: August
trailWales
Rhayader Mountain Trail
http://www.runfurther.com/index.php?opti...
Distance: 43.0 miles (69.2km)
Usual date: August
trailSouthern Scotland
The River Ayr Way Challenge
http://www.theriverayrway.org/
Distance: 44.0 miles (70.8km)
Usual date: September
trailSouthern England
Country to Capital
http://gobeyondultra.co.uk/events/countr...
Distance: 44.0 miles (70.8km)
Time limit: 11h
Usual date: January
trailWales
Across Wales Walk
http://www.whereitsat.pwp.blueyonder.co....
Distance: 45.0 miles (72.4km)
Time limit: 18h
Best time: 08:08:00
Usual date: September
not to be confused with the "Newtown Rotary Club's Across Wales Walk"
trailWales
Beacons Ultra
http://www.beaconsultra.com
Distance: 45.0 miles (72.4km)
Ascent: 1200m
Time limit: 16h
Best time: 6:38
Usual date: December
trailSouthern England
Escape to Victory
http://www.extremerunning.org/index.php?...
Distance: 45.0 miles (72.4km)
Usual date: May
trailNorthern England
Afoot in Two Dales
http://www.ldwa.org.uk/lgt/web_page.php?...
Distance: 50.0 miles (80.5km)
Ascent: 5,800 ft
Time limit: 24h
Usual date: July
roadSouthern Scotland
John Lucas Memorial Run
http://www.strathavenstriders.co.uk/
Distance: 50.0 miles (80.5km)
Usual date: August
trailWales
The Longmynd Hike
http://www.longmyndhike.org.uk
Distance: 50.0 miles (80.5km)
Ascent: 8,000 ft
Time limit: 24h
Best time: 08:03:00
Usual date: October
trailNorthern England
Rowbotham’s Round Rotherham
http://www.hmarston.pwp.blueyonder.co.uk...
Distance: 50.0 miles (80.5km)
Best time: 06:17:50
Usual date: December
trailSouthern England
The Thames Path Ultra
http://www.thamesultra.com
Distance: 50.0 miles (80.5km)
Time limit: 16h ?
Best time: 06:18:30
Usual date: January
trailNorthern England
Lakeland 50
http://www.lakeland100.com
Distance: 50.0 miles (80.5km)
Ascent: 3,100m
Time limit: 24h
Best time: 12:03:00
Usual date: August
also a 100 miles
trailSouthern England
Thames Trot Ultra 50
http://gobeyondultra.co.uk/events/thames...
Distance: 50.0 miles (80.5km)
Time limit: 11h
Usual date: February


50.0+ to 60.0 miles

trailNorthern England
Durham Dales Challenge
http://www.walknortheast.org.uk/ddc2007....
Distance: 52.0 miles (83.7km)
Best time: 10:57:00
Usual date: June
also a 28 miles
trailSouthern England
50 Mile Challenge
http://50milechallenge.co.uk/50mile.htm
Distance: 52.4 miles (84.3km)
Time limit: 15h
Best time: 07:01:00
Usual date: July
trailCentral England
The Night Day Marathon
http://www.ambitionevents.com/nightday
Distance: 52.4 miles (84.3km)
Time limit: 24h
Usual date: April
trailNorthern England
The Original Mountain Marathon (was "Karrimor Mountain Marathon")
http://www.theomm.com
Distance: 52.4 miles (84.3km)
Ascent: 3,000m
multiday - 2 days
Usual date: October
trailSouthern Scotland
Highland Fling
http://www.highlandflingrace.org
Distance: 53.0 miles (85.3km)
Time limit: 15h
Best time: 07:24:50
Usual date: April
trailSouthern England
Thames Meander
http://www.thamesmeander.com
Distance: 54.0 miles (86.9km)
Time limit: 18h30
Best time: 07:55:00
Usual date: February
trailNorthern England
Hardmoors 55
http://www.hardmoors110.org.uk
Distance: 55.0 miles (88.5km)
Ascent: 2,700m
Time limit: 15h
Best time: 08:43:00
Usual date: March
my race report
done
trailSouthern Scotland
Cateran Trail
http://www.cateran-trail.org
Distance: 55.0 miles (88.5km)
Time limit: 18h
Usual date: May
trailSouthern England
London to Brighton
http://www.extremerunning.org/index.php?...
Distance: 55.0 miles (88.5km)
Usual date: October
Trail version of the first British ultra
my race report
off
trailSouthern Scotland
Glasgow-Edinburgh Double Marathon
http://www.highlandultramarathon.co.uk/i...
Distance: 55.0 miles (88.5km)
Time limit: 13h
Usual date: March
trailNorthern England
Bullock Smithy Hike
http://www.bullocksmithy.com
Distance: 56.0 miles (90.1km)
Best time: 08:55:00
Usual date: September
trailSouthern Scotland
Ramsay's Round
http://www.ramsaysround.com/
Distance: 56.0 miles (90.1km)
Ascent: 28,500 ft
can be attempted at any time
trailNorthern England
Fellsman
http://www.fellsman.org.uk/doku.php?id=e...
Distance: 60.0 miles (96.6km)
Ascent: 11,000 ft
Best time: 10:15:00
Usual date: May
trailNorthern England
Hardmoors 60
http://www.hardmoors110.org.uk
Distance: 60.0 miles (96.6km)
Time limit: 15h
Usual date: September


60.0+ to 100.0 miles

trailWales
Paddy Buckley Round
http://en.wikipedia.org/wiki/Paddy_Buckl...
Distance: 62.0 miles (99.8km)
Ascent: 28,000ft
Best time: 18:10:00
can be attempted at any time
my race report
DNF
trailSouthern England
Surrey Summits Marshal's Walk
http://ourworld.compuserve.com/homepages...
Distance: 62.0 miles (99.8km)
Usual date: April
roadSouthern Scotland
Self Transcendence 100k
http://www.srichinmoyraces.org/uk/ultras...
Distance: 62.1 miles (100.0km)
Best time: 07:04:46 ?
Usual date: May
not sure it's still held
roadCentral England
Gloucester 100k
http://www.runnersworld.co.uk/events/vie...
Distance: 62.1 miles (100.0km)
Usual date: April
Not sure it's still held
trailNorthern England
Bob Graham Round
http://www.bobgrahamround.co.uk
Distance: 74.0 miles (119.1km)
Ascent: 28,500 ft
Best time: 13:53:00
can be attempted at any time
trailNorthern Scotland
Eagle Eye Ultra
http://www.eagleisleultra.com/index.php
Distance: 74.0 miles (119.1km)
multidays
Usual date: September
3 days
trailSouthern England
ONER
http://www.votwo.co.uk/votwo2007/events-...
Distance: 78.6 miles (126.5km)
Time limit: 24h
Usual date: August
trailSouthern England
Jurassic Coast Challenge
http://www.votwo.co.uk/votwo2007/events-...
Distance: 78.6 miles (126.5km)
multidays
Usual date: March
3 days - 3 marathons
trailCentral England
Ridgeway Challenge
http://www.tra-uk.org/ridgeway_challenge...
Distance: 85.0 miles (136.8km)
Ascent: 9,000 ft
Best time: 15:18:00
Usual date: August
trailSouthern Scotland
West Highland Way Race
http://www.westhighlandwayrace.org
Distance: 95.0 miles (152.9km)
Ascent: 14,760 ft
Time limit: 35h
Best time: 15:44:50
Usual date: June
trailNorthern England
Pennine Relentless Challenge
http://www.penninechallenge.com
Distance: 100.0 miles (160.9km)
Ascent: 10,000m
Best time: 22:32:00
Usual date: June
trailNorthern England
Lakeland 100 (Ultra Tour of the Lake District)
http://www.lakeland100.com
Distance: 100.0 miles (160.9km)
Ascent: 6,300m
Time limit: 40h
Best time: 23:40:00
Usual date: August
also a 50 miles
trailSouthern England
Caesar's Camp 100
http://homepage.ntlworld.com/henk.vander...
Distance: 100.0 miles (160.9km)
Time limit: 30h
Best time: 19:09
Usual date: October
10-mile loops / also 30 and 50 milers
trailSouthern England
Devon 100
http://www.route27.co.uk/the-devon-100.h...
Distance: 100.0 miles (160.9km)
Ascent: 5,000
Time limit: 27h
Usual date: April
trailSouthern England
Thames Path 100
http://www.centurionrunning.com/thames-p...
Distance: 100.0 miles (160.9km)
Ascent: 650
Time limit: 30h
Usual date: March
First edition in 2012


100.0+ to 1000.0 miles

trailNorthern England
Northumberland 100
http://www.runnersworld.co.uk/events/vie...
Distance: 101.0 miles (162.5km)
Ascent: 14,400 ft
Time limit: 48h
Usual date: May
Not sure it's still held
trailSouthern England
South Downs Way Race
http://www.southdownswayrace.org
Distance: 102.0 miles (164.2km)
Ascent: 13,600 ft
Time limit: 32h
Usual date: September
trailNorthern England
Hardmoors 110
http://www.hardmoors110.org.uk
Distance: 110.0 miles (177.0km)
Ascent: 6,000m
Time limit: 36h
Best time: 20:58
Usual date: June
my race report
done
trailSouthern Scotland
British Ultra
http://www.britishultra.com/
Distance: 119.8 miles (192.8km)
multiday
Best time: 31:57:37
Usual date: May
6 days
trailSouthern Scotland
Sandbaggers Scottish Ultra
http://www.sand-baggers.com/ScottishUltr...
Distance: 140.0 miles (225.3km)
multidays
Usual date: May
6 days
trailCentral England
Grand Union Canal Race
http://www.gucr.co.uk
Distance: 145.0 miles (233.4km)
Time limit: 45h
Best time: 27:35:00
Usual date: May
trailNorthern England
THe Viking Way Ultra
http://www.vikingwayultra.com
Distance: 147.0 miles (236.6km)
Ascent: 2,295
Time limit: 40h
Usual date: April
First edition in 2012
trailNorthern England
The Marathon Across Britain Coast to Coast Run
http://www.extremerunning.org/index.php?...
Distance: 170.0 miles (273.6km)
multiday
Usual date: June
6 days
trailSouthern England
Seni Extreme 200
http://www.ambitionevents.com/seniextrem...
Distance: 200.0 miles (321.9km)
multidays
Usual date: June
check if it's still held
trailNorthern Scotland
Highland Ultramarathon
http://www.highlandultramarathon.co.uk
Distance: 200.0 miles (321.9km)
multiday
Usual date: May
6 days
trailSouthern England
260 mile Thames Ring Race
http://www.tra-uk.org/race_information.p...
Distance: 260.0 miles (418.4km)
Time limit: 100h
Best time: 59:49:00
Usual date: June
roadUnknown
JOGLE Ultra
http://www.rorycoleman.co.uk/jogle.asp?n...
Distance: 850.0 miles (1367.9km)
multidays
Usual date: May
16 days


Time races

loopSouthern England
St Catherines 6/12 hour Race (Crawley)
Time limit: 6/12h
Usual date: March
loopNorthern England
Hull 24 hour
http://www.webnet.karoo.net/24hr/24hrpag...
Time limit: 24h
Best distance: 141 miles
Usual date: July
loopSouthern England
Self Transcendence 24 hour
http://www.srichinmoyraces.org/uk/ultras...
Time limit: 24h
Best distance: 143 miles
Usual date: October


January

trailNorthern England
Hardmoors 30
http://www.hardmoors110.org.uk
Distance: 30.0 miles (48.3km)
Time limit: 7h
Best time: 04:20:00
Usual date: January
trailSouthern England
Country to Capital
http://gobeyondultra.co.uk/events/countr...
Distance: 44.0 miles (70.8km)
Time limit: 11h
Usual date: January
trailSouthern England
The Thames Path Ultra
http://www.thamesultra.com
Distance: 50.0 miles (80.5km)
Time limit: 16h ?
Best time: 06:18:30
Usual date: January


February

trailNorthern England
Grantham Canal Run
http://www.rorycoleman.co.uk/Grantham%20...
Distance: 29.3 miles (47.2km)
Usual date: February
roadSouthern England
London Ultra 50K
http://www.rorycoleman.co.uk/london ultr...
Distance: 31.1 miles (50.0km)
Usual date: February
trailSouthern England
Moonlight Challenge
http://50milechallenge.co.uk/moonlight.h...
Distance: 32.8 miles (52.7km)
Time limit: 8h
Usual date: February
roadCentral England
Draycote Water 35
http://www.krrac.info/DW_Info.asp
Distance: 35.0 miles (56.3km)
Best time: 03:42:22
Usual date: February
trailSouthern England
Tring 2 Town
http://www.tring2town.com
Distance: 40.0 miles (64.4km)
Best time: 05:19:00
Usual date: February
trailSouthern England
Thames Trot Ultra 50
http://gobeyondultra.co.uk/events/thames...
Distance: 50.0 miles (80.5km)
Time limit: 11h
Usual date: February
trailSouthern England
Thames Meander
http://www.thamesmeander.com
Distance: 54.0 miles (86.9km)
Time limit: 18h30
Best time: 07:55:00
Usual date: February


March

trailCentral England
Wye Ultra Marathon
http://www.blacksheepsports.co.uk/public...
Distance: 30.0 miles (48.3km)
Usual date: March
trailNorthern England
Wuthering Hike - Haworth Hobble
http://www.kcac.co.uk/?page_id=199
Distance: 33.0 miles (53.1km)
Ascent: 4,400 ft
Best time: 03:43:24
Usual date: March
loopWales
Barry 40 mile track race
http://www.lescroupiersrunningclub.org.u...
Distance: 40.0 miles (64.4km)
Time limit: 6h
Best time: 04:08:16
Usual date: March
trailNorthern England
High Peak Marathon
http://www.highpeakclub.union.shef.ac.uk...
Distance: 40.0 miles (64.4km)
Best time: 09:21:56 ?
Usual date: March
Not to be confused with the High Peak 40 Mile Challenge
trailNorthern England
Hardmoors 55
http://www.hardmoors110.org.uk
Distance: 55.0 miles (88.5km)
Ascent: 2,700m
Time limit: 15h
Best time: 08:43:00
Usual date: March
my race report
done
trailSouthern Scotland
Glasgow-Edinburgh Double Marathon
http://www.highlandultramarathon.co.uk/i...
Distance: 55.0 miles (88.5km)
Time limit: 13h
Usual date: March
trailSouthern England
Jurassic Coast Challenge
http://www.votwo.co.uk/votwo2007/events-...
Distance: 78.6 miles (126.5km)
multidays
Usual date: March
3 days - 3 marathons
trailSouthern England
Thames Path 100
http://www.centurionrunning.com/thames-p...
Distance: 100.0 miles (160.9km)
Ascent: 650
Time limit: 30h
Usual date: March
First edition in 2012
loopSouthern England
St Catherines 6/12 hour Race (Crawley)
Time limit: 6/12h
Usual date: March


April

trailNorthern England
Manx Mountain Marathon
http://www.manxfellrunners.org/index.php...
Distance: 31.5 miles (50.7km)
Ascent: 8,000 ft
Best time: 04:22:45
Usual date: April
trailNorthern England
Calderdale Hike
http://www.sowerby-bridge.org.uk/scouts/...
Distance: 34.0 miles (54.7km)
Usual date: April
trailNorthern England
The Four Inns Walk
http://www.dynarx.eclipse.co.uk/fourinns...
Distance: 40.0 miles (64.4km)
Best time: 07:19:00
Usual date: April
trailSouthern England
Compton Downland Challenge 40 miles (Full Fat Forty)
http://www.comptonharriers.co.uk/Challen...
Distance: 40.0 miles (64.4km)
Ascent: 3,900 feet
Usual date: April
trailCentral England
The Night Day Marathon
http://www.ambitionevents.com/nightday
Distance: 52.4 miles (84.3km)
Time limit: 24h
Usual date: April
trailSouthern Scotland
Highland Fling
http://www.highlandflingrace.org
Distance: 53.0 miles (85.3km)
Time limit: 15h
Best time: 07:24:50
Usual date: April
trailSouthern England
Surrey Summits Marshal's Walk
http://ourworld.compuserve.com/homepages...
Distance: 62.0 miles (99.8km)
Usual date: April
roadCentral England
Gloucester 100k
http://www.runnersworld.co.uk/events/vie...
Distance: 62.1 miles (100.0km)
Usual date: April
Not sure it's still held
trailSouthern England
Devon 100
http://www.route27.co.uk/the-devon-100.h...
Distance: 100.0 miles (160.9km)
Ascent: 5,000
Time limit: 27h
Usual date: April
trailNorthern England
THe Viking Way Ultra
http://www.vikingwayultra.com
Distance: 147.0 miles (236.6km)
Ascent: 2,295
Time limit: 40h
Usual date: April
First edition in 2012


May

trailSouthern England
3 Forts Marathon
http://www.threefortsmarathon.org.uk
Distance: 27.0 miles (43.5km)
Ascent: 3,450 ft
Time limit: 6h
Best time: 03:07:03
Usual date: May
my race report
done
roadSouthern Scotland
Fife AC 50K
http://bcruickshank.brinkster.net/page6....
Distance: 31.1 miles (50.0km)
Best time: 03:02:27 ?
Usual date: May
trailSouthern England
Marlborough Downs Challenge
http://www.marlboroughrunningclub.co.uk/...
Distance: 33.0 miles (53.1km)
Best time: 4:06:28
Usual date: May
trailCentral England
Northants Ultra Shires And Spires
http://gobeyondultra.co.uk/events/northa...
Distance: 35.0 miles (56.3km)
Time limit: 9h
Usual date: May
trailSouthern England
Escape to Victory
http://www.extremerunning.org/index.php?...
Distance: 45.0 miles (72.4km)
Usual date: May
trailSouthern Scotland
Cateran Trail
http://www.cateran-trail.org
Distance: 55.0 miles (88.5km)
Time limit: 18h
Usual date: May
trailNorthern England
Fellsman
http://www.fellsman.org.uk/doku.php?id=e...
Distance: 60.0 miles (96.6km)
Ascent: 11,000 ft
Best time: 10:15:00
Usual date: May
roadSouthern Scotland
Self Transcendence 100k
http://www.srichinmoyraces.org/uk/ultras...
Distance: 62.1 miles (100.0km)
Best time: 07:04:46 ?
Usual date: May
not sure it's still held
trailNorthern England
Northumberland 100
http://www.runnersworld.co.uk/events/vie...
Distance: 101.0 miles (162.5km)
Ascent: 14,400 ft
Time limit: 48h
Usual date: May
Not sure it's still held
trailSouthern Scotland
British Ultra
http://www.britishultra.com/
Distance: 119.8 miles (192.8km)
multiday
Best time: 31:57:37
Usual date: May
6 days
trailSouthern Scotland
Sandbaggers Scottish Ultra
http://www.sand-baggers.com/ScottishUltr...
Distance: 140.0 miles (225.3km)
multidays
Usual date: May
6 days
trailCentral England
Grand Union Canal Race
http://www.gucr.co.uk
Distance: 145.0 miles (233.4km)
Time limit: 45h
Best time: 27:35:00
Usual date: May
trailNorthern Scotland
Highland Ultramarathon
http://www.highlandultramarathon.co.uk
Distance: 200.0 miles (321.9km)
multiday
Usual date: May
6 days
roadUnknown
JOGLE Ultra
http://www.rorycoleman.co.uk/jogle.asp?n...
Distance: 850.0 miles (1367.9km)
multidays
Usual date: May
16 days


June

trailNorthern Scotland
Lochalsh Dirty 30 Challenge
http://www.lochalsh-trails.co.uk
Distance: 30.0 miles (48.3km)
Time limit: 24h
Usual date: June
roadSouthern England
Dartmoor Discovery
http://www.hmca.org.uk/marathon/
Distance: 32.0 miles (51.5km)
Usual date: June
trailWales
Newtown Rotary Club's Across Wales Walk
http://newtown-rotary.org.uk/site/node/9...
Distance: 42.0 miles (67.6km)
Usual date: June
not to be confused with the "Across Wales Walk"
trailNorthern England
Durham Dales Challenge
http://www.walknortheast.org.uk/ddc2007....
Distance: 52.0 miles (83.7km)
Best time: 10:57:00
Usual date: June
also a 28 miles
trailSouthern Scotland
West Highland Way Race
http://www.westhighlandwayrace.org
Distance: 95.0 miles (152.9km)
Ascent: 14,760 ft
Time limit: 35h
Best time: 15:44:50
Usual date: June
trailNorthern England
Pennine Relentless Challenge
http://www.penninechallenge.com
Distance: 100.0 miles (160.9km)
Ascent: 10,000m
Best time: 22:32:00
Usual date: June
trailNorthern England
Hardmoors 110
http://www.hardmoors110.org.uk
Distance: 110.0 miles (177.0km)
Ascent: 6,000m
Time limit: 36h
Best time: 20:58
Usual date: June
my race report
done
trailNorthern England
The Marathon Across Britain Coast to Coast Run
http://www.extremerunning.org/index.php?...
Distance: 170.0 miles (273.6km)
multiday
Usual date: June
6 days
trailSouthern England
Seni Extreme 200
http://www.ambitionevents.com/seniextrem...
Distance: 200.0 miles (321.9km)
multidays
Usual date: June
check if it's still held
trailSouthern England
260 mile Thames Ring Race
http://www.tra-uk.org/race_information.p...
Distance: 260.0 miles (418.4km)
Time limit: 100h
Best time: 59:49:00
Usual date: June


July

trailSouthern England
Downland Ultra Challenge
http://www.haywardsheathharriers.co.uk/n...
Distance: 30.0 miles (48.3km)
Usual date: July
trailNorthern England
Osmotherley Phoenix
http://www.runfurther.com/media/pdf_race...
Distance: 33.0 miles (53.1km)
Ascent: 4,000 ft
Usual date: July
trailNorthern England
Lyke Wake
http://www.lykewakewalk.co.uk/
Distance: 42.0 miles (67.6km)
Usual date: July
trailNorthern England
Afoot in Two Dales
http://www.ldwa.org.uk/lgt/web_page.php?...
Distance: 50.0 miles (80.5km)
Ascent: 5,800 ft
Time limit: 24h
Usual date: July
trailSouthern England
50 Mile Challenge
http://50milechallenge.co.uk/50mile.htm
Distance: 52.4 miles (84.3km)
Time limit: 15h
Best time: 07:01:00
Usual date: July
loopNorthern England
Hull 24 hour
http://www.webnet.karoo.net/24hr/24hrpag...
Time limit: 24h
Best distance: 141 miles
Usual date: July


August

roadCentral England
Boddington 50K
http://www.beyondthelimitations.co.uk/4....
Distance: 31.1 miles (50.0km)
Best time: 03:06:07
Usual date: August
trailSouthern England
Salisbury 54321
http://salisburyfirestation.info/
Distance: 31.1 miles (50.0km)
Usual date: August
trailSouthern Scotland
Devil O' The Highlands
http://devilothehighlandsfootrace.co.uk/
Distance: 43.0 miles (69.2km)
Time limit: 12h
Best time: 05:22:54
Usual date: August
trailWales
Rhayader Mountain Trail
http://www.runfurther.com/index.php?opti...
Distance: 43.0 miles (69.2km)
Usual date: August
roadSouthern Scotland
John Lucas Memorial Run
http://www.strathavenstriders.co.uk/
Distance: 50.0 miles (80.5km)
Usual date: August
trailNorthern England
Lakeland 50
http://www.lakeland100.com
Distance: 50.0 miles (80.5km)
Ascent: 3,100m
Time limit: 24h
Best time: 12:03:00
Usual date: August
also a 100 miles
trailSouthern England
ONER
http://www.votwo.co.uk/votwo2007/events-...
Distance: 78.6 miles (126.5km)
Time limit: 24h
Usual date: August
trailCentral England
Ridgeway Challenge
http://www.tra-uk.org/ridgeway_challenge...
Distance: 85.0 miles (136.8km)
Ascent: 9,000 ft
Best time: 15:18:00
Usual date: August
trailNorthern England
Lakeland 100 (Ultra Tour of the Lake District)
http://www.lakeland100.com
Distance: 100.0 miles (160.9km)
Ascent: 6,300m
Time limit: 40h
Best time: 23:40:00
Usual date: August
also a 50 miles


September

trailWales
The Pumlumon Challenge
http://www.pumlumon.org.uk/challenge.php
Distance: 27.0 miles (43.5km)
Ascent: 5,500 ft
Usual date: September
trailCentral England
The JW Ultra
http://www.ultrarunner.co.uk/index.php?o...
Distance: 30.0 miles (48.3km)
Usual date: September
trailNorthern England
High Peak 40 Mile Challenge
http://www.highpeak40.co.uk
Distance: 40.0 miles (64.4km)
Best time: 05.31.08 ?
Usual date: September
Not to be confused with the High Peak Marathon
trailSouthern Scotland
The River Ayr Way Challenge
http://www.theriverayrway.org/
Distance: 44.0 miles (70.8km)
Usual date: September
trailWales
Across Wales Walk
http://www.whereitsat.pwp.blueyonder.co....
Distance: 45.0 miles (72.4km)
Time limit: 18h
Best time: 08:08:00
Usual date: September
not to be confused with the "Newtown Rotary Club's Across Wales Walk"
trailNorthern England
Bullock Smithy Hike
http://www.bullocksmithy.com
Distance: 56.0 miles (90.1km)
Best time: 08:55:00
Usual date: September
trailNorthern England
Hardmoors 60
http://www.hardmoors110.org.uk
Distance: 60.0 miles (96.6km)
Time limit: 15h
Usual date: September
trailNorthern Scotland
Eagle Eye Ultra
http://www.eagleisleultra.com/index.php
Distance: 74.0 miles (119.1km)
multidays
Usual date: September
3 days
trailSouthern England
South Downs Way Race
http://www.southdownswayrace.org
Distance: 102.0 miles (164.2km)
Ascent: 13,600 ft
Time limit: 32h
Usual date: September


October

trailNorthern England
Round Ripon Ultra
http://gobeyondultra.co.uk/events/round_...
Distance: 35.0 miles (56.3km)
Time limit: 10h
Usual date: October
trailWales
The Longmynd Hike
http://www.longmyndhike.org.uk
Distance: 50.0 miles (80.5km)
Ascent: 8,000 ft
Time limit: 24h
Best time: 08:03:00
Usual date: October
trailNorthern England
The Original Mountain Marathon (was "Karrimor Mountain Marathon")
http://www.theomm.com
Distance: 52.4 miles (84.3km)
Ascent: 3,000m
multiday - 2 days
Usual date: October
trailSouthern England
London to Brighton
http://www.extremerunning.org/index.php?...
Distance: 55.0 miles (88.5km)
Usual date: October
Trail version of the first British ultra
my race report
off
trailSouthern England
Caesar's Camp 100
http://homepage.ntlworld.com/henk.vander...
Distance: 100.0 miles (160.9km)
Time limit: 30h
Best time: 19:09
Usual date: October
10-mile loops / also 30 and 50 milers
loopSouthern England
Self Transcendence 24 hour
http://www.srichinmoyraces.org/uk/ultras...
Time limit: 24h
Best distance: 143 miles
Usual date: October


December

trailSouthern England
Doyen of the Downs
http://www.extremerunning.org/index.php?...
Distance: 30.0 miles (48.3km)
Time limit: 7h
Usual date: December
trailWales
Beacons Ultra
http://www.beaconsultra.com
Distance: 45.0 miles (72.4km)
Ascent: 1200m
Time limit: 16h
Best time: 6:38
Usual date: December
trailNorthern England
Rowbotham’s Round Rotherham
http://www.hmarston.pwp.blueyonder.co.uk...
Distance: 50.0 miles (80.5km)
Best time: 06:17:50
Usual date: December


Any time

trailSouthern Scotland
Ramsay's Round
http://www.ramsaysround.com/
Distance: 56.0 miles (90.1km)
Ascent: 28,500 ft
can be attempted at any time
trailWales
Paddy Buckley Round
http://en.wikipedia.org/wiki/Paddy_Buckl...
Distance: 62.0 miles (99.8km)
Ascent: 28,000ft
Best time: 18:10:00
can be attempted at any time
my race report
DNF
trailNorthern England
Bob Graham Round
http://www.bobgrahamround.co.uk
Distance: 74.0 miles (119.1km)
Ascent: 28,500 ft
Best time: 13:53:00
can be attempted at any time


Southern England

trailSouthern England
Country to Capital
http://gobeyondultra.co.uk/events/countr...
Distance: 44.0 miles (70.8km)
Time limit: 11h
Usual date: January
trailSouthern England
The Thames Path Ultra
http://www.thamesultra.com
Distance: 50.0 miles (80.5km)
Time limit: 16h ?
Best time: 06:18:30
Usual date: January
roadSouthern England
London Ultra 50K
http://www.rorycoleman.co.uk/london ultr...
Distance: 31.1 miles (50.0km)
Usual date: February
trailSouthern England
Moonlight Challenge
http://50milechallenge.co.uk/moonlight.h...
Distance: 32.8 miles (52.7km)
Time limit: 8h
Usual date: February
trailSouthern England
Tring 2 Town
http://www.tring2town.com
Distance: 40.0 miles (64.4km)
Best time: 05:19:00
Usual date: February
trailSouthern England
Thames Trot Ultra 50
http://gobeyondultra.co.uk/events/thames...
Distance: 50.0 miles (80.5km)
Time limit: 11h
Usual date: February
trailSouthern England
Thames Meander
http://www.thamesmeander.com
Distance: 54.0 miles (86.9km)
Time limit: 18h30
Best time: 07:55:00
Usual date: February
trailSouthern England
Jurassic Coast Challenge
http://www.votwo.co.uk/votwo2007/events-...
Distance: 78.6 miles (126.5km)
multidays
Usual date: March
3 days - 3 marathons
trailSouthern England
Thames Path 100
http://www.centurionrunning.com/thames-p...
Distance: 100.0 miles (160.9km)
Ascent: 650
Time limit: 30h
Usual date: March
First edition in 2012
loopSouthern England
St Catherines 6/12 hour Race (Crawley)
Time limit: 6/12h
Usual date: March
trailSouthern England
Compton Downland Challenge 40 miles (Full Fat Forty)
http://www.comptonharriers.co.uk/Challen...
Distance: 40.0 miles (64.4km)
Ascent: 3,900 feet
Usual date: April
trailSouthern England
Surrey Summits Marshal's Walk
http://ourworld.compuserve.com/homepages...
Distance: 62.0 miles (99.8km)
Usual date: April
trailSouthern England
Devon 100
http://www.route27.co.uk/the-devon-100.h...
Distance: 100.0 miles (160.9km)
Ascent: 5,000
Time limit: 27h
Usual date: April
trailSouthern England
3 Forts Marathon
http://www.threefortsmarathon.org.uk
Distance: 27.0 miles (43.5km)
Ascent: 3,450 ft
Time limit: 6h
Best time: 03:07:03
Usual date: May
my race report
done
trailSouthern England
Marlborough Downs Challenge
http://www.marlboroughrunningclub.co.uk/...
Distance: 33.0 miles (53.1km)
Best time: 4:06:28
Usual date: May
trailSouthern England
Escape to Victory
http://www.extremerunning.org/index.php?...
Distance: 45.0 miles (72.4km)
Usual date: May
roadSouthern England
Dartmoor Discovery
http://www.hmca.org.uk/marathon/
Distance: 32.0 miles (51.5km)
Usual date: June
trailSouthern England
Seni Extreme 200
http://www.ambitionevents.com/seniextrem...
Distance: 200.0 miles (321.9km)
multidays
Usual date: June
check if it's still held
trailSouthern England
260 mile Thames Ring Race
http://www.tra-uk.org/race_information.p...
Distance: 260.0 miles (418.4km)
Time limit: 100h
Best time: 59:49:00
Usual date: June
trailSouthern England
Downland Ultra Challenge
http://www.haywardsheathharriers.co.uk/n...
Distance: 30.0 miles (48.3km)
Usual date: July
trailSouthern England
50 Mile Challenge
http://50milechallenge.co.uk/50mile.htm
Distance: 52.4 miles (84.3km)
Time limit: 15h
Best time: 07:01:00
Usual date: July
trailSouthern England
Salisbury 54321
http://salisburyfirestation.info/
Distance: 31.1 miles (50.0km)
Usual date: August
trailSouthern England
ONER
http://www.votwo.co.uk/votwo2007/events-...
Distance: 78.6 miles (126.5km)
Time limit: 24h
Usual date: August
trailSouthern England
South Downs Way Race
http://www.southdownswayrace.org
Distance: 102.0 miles (164.2km)
Ascent: 13,600 ft
Time limit: 32h
Usual date: September
trailSouthern England
London to Brighton
http://www.extremerunning.org/index.php?...
Distance: 55.0 miles (88.5km)
Usual date: October
Trail version of the first British ultra
my race report
off
trailSouthern England
Caesar's Camp 100
http://homepage.ntlworld.com/henk.vander...
Distance: 100.0 miles (160.9km)
Time limit: 30h
Best time: 19:09
Usual date: October
10-mile loops / also 30 and 50 milers
loopSouthern England
Self Transcendence 24 hour
http://www.srichinmoyraces.org/uk/ultras...
Time limit: 24h
Best distance: 143 miles
Usual date: October
trailSouthern England
Doyen of the Downs
http://www.extremerunning.org/index.php?...
Distance: 30.0 miles (48.3km)
Time limit: 7h
Usual date: December


Central England

roadCentral England
Draycote Water 35
http://www.krrac.info/DW_Info.asp
Distance: 35.0 miles (56.3km)
Best time: 03:42:22
Usual date: February
trailCentral England
Wye Ultra Marathon
http://www.blacksheepsports.co.uk/public...
Distance: 30.0 miles (48.3km)
Usual date: March
trailCentral England
The Night Day Marathon
http://www.ambitionevents.com/nightday
Distance: 52.4 miles (84.3km)
Time limit: 24h
Usual date: April
roadCentral England
Gloucester 100k
http://www.runnersworld.co.uk/events/vie...
Distance: 62.1 miles (100.0km)
Usual date: April
Not sure it's still held
trailCentral England
Northants Ultra Shires And Spires
http://gobeyondultra.co.uk/events/northa...
Distance: 35.0 miles (56.3km)
Time limit: 9h
Usual date: May
trailCentral England
Grand Union Canal Race
http://www.gucr.co.uk
Distance: 145.0 miles (233.4km)
Time limit: 45h
Best time: 27:35:00
Usual date: May
roadCentral England
Boddington 50K
http://www.beyondthelimitations.co.uk/4....
Distance: 31.1 miles (50.0km)
Best time: 03:06:07
Usual date: August
trailCentral England
Ridgeway Challenge
http://www.tra-uk.org/ridgeway_challenge...
Distance: 85.0 miles (136.8km)
Ascent: 9,000 ft
Best time: 15:18:00
Usual date: August
trailCentral England
The JW Ultra
http://www.ultrarunner.co.uk/index.php?o...
Distance: 30.0 miles (48.3km)
Usual date: September


Wales

loopWales
Barry 40 mile track race
http://www.lescroupiersrunningclub.org.u...
Distance: 40.0 miles (64.4km)
Time limit: 6h
Best time: 04:08:16
Usual date: March
trailWales
Newtown Rotary Club's Across Wales Walk
http://newtown-rotary.org.uk/site/node/9...
Distance: 42.0 miles (67.6km)
Usual date: June
not to be confused with the "Across Wales Walk"
trailWales
Rhayader Mountain Trail
http://www.runfurther.com/index.php?opti...
Distance: 43.0 miles (69.2km)
Usual date: August
trailWales
The Pumlumon Challenge
http://www.pumlumon.org.uk/challenge.php
Distance: 27.0 miles (43.5km)
Ascent: 5,500 ft
Usual date: September
trailWales
Across Wales Walk
http://www.whereitsat.pwp.blueyonder.co....
Distance: 45.0 miles (72.4km)
Time limit: 18h
Best time: 08:08:00
Usual date: September
not to be confused with the "Newtown Rotary Club's Across Wales Walk"
trailWales
The Longmynd Hike
http://www.longmyndhike.org.uk
Distance: 50.0 miles (80.5km)
Ascent: 8,000 ft
Time limit: 24h
Best time: 08:03:00
Usual date: October
trailWales
Beacons Ultra
http://www.beaconsultra.com
Distance: 45.0 miles (72.4km)
Ascent: 1200m
Time limit: 16h
Best time: 6:38
Usual date: December
trailWales
Paddy Buckley Round
http://en.wikipedia.org/wiki/Paddy_Buckl...
Distance: 62.0 miles (99.8km)
Ascent: 28,000ft
Best time: 18:10:00
can be attempted at any time
my race report
DNF


Northern England

trailNorthern England
Hardmoors 30
http://www.hardmoors110.org.uk
Distance: 30.0 miles (48.3km)
Time limit: 7h
Best time: 04:20:00
Usual date: January
trailNorthern England
Grantham Canal Run
http://www.rorycoleman.co.uk/Grantham%20...
Distance: 29.3 miles (47.2km)
Usual date: February
trailNorthern England
Wuthering Hike - Haworth Hobble
http://www.kcac.co.uk/?page_id=199
Distance: 33.0 miles (53.1km)
Ascent: 4,400 ft
Best time: 03:43:24
Usual date: March
trailNorthern England
High Peak Marathon
http://www.highpeakclub.union.shef.ac.uk...
Distance: 40.0 miles (64.4km)
Best time: 09:21:56 ?
Usual date: March
Not to be confused with the High Peak 40 Mile Challenge
trailNorthern England
Hardmoors 55
http://www.hardmoors110.org.uk
Distance: 55.0 miles (88.5km)
Ascent: 2,700m
Time limit: 15h
Best time: 08:43:00
Usual date: March
my race report
done
trailNorthern England
Manx Mountain Marathon
http://www.manxfellrunners.org/index.php...
Distance: 31.5 miles (50.7km)
Ascent: 8,000 ft
Best time: 04:22:45
Usual date: April
trailNorthern England
Calderdale Hike
http://www.sowerby-bridge.org.uk/scouts/...
Distance: 34.0 miles (54.7km)
Usual date: April
trailNorthern England
The Four Inns Walk
http://www.dynarx.eclipse.co.uk/fourinns...
Distance: 40.0 miles (64.4km)
Best time: 07:19:00
Usual date: April
trailNorthern England
THe Viking Way Ultra
http://www.vikingwayultra.com
Distance: 147.0 miles (236.6km)
Ascent: 2,295
Time limit: 40h
Usual date: April
First edition in 2012
trailNorthern England
Fellsman
http://www.fellsman.org.uk/doku.php?id=e...
Distance: 60.0 miles (96.6km)
Ascent: 11,000 ft
Best time: 10:15:00
Usual date: May
trailNorthern England
Northumberland 100
http://www.runnersworld.co.uk/events/vie...
Distance: 101.0 miles (162.5km)
Ascent: 14,400 ft
Time limit: 48h
Usual date: May
Not sure it's still held
trailNorthern England
Durham Dales Challenge
http://www.walknortheast.org.uk/ddc2007....
Distance: 52.0 miles (83.7km)
Best time: 10:57:00
Usual date: June
also a 28 miles
trailNorthern England
Pennine Relentless Challenge
http://www.penninechallenge.com
Distance: 100.0 miles (160.9km)
Ascent: 10,000m
Best time: 22:32:00
Usual date: June
trailNorthern England
Hardmoors 110
http://www.hardmoors110.org.uk
Distance: 110.0 miles (177.0km)
Ascent: 6,000m
Time limit: 36h
Best time: 20:58
Usual date: June
my race report
done
trailNorthern England
The Marathon Across Britain Coast to Coast Run
http://www.extremerunning.org/index.php?...
Distance: 170.0 miles (273.6km)
multiday
Usual date: June
6 days
trailNorthern England
Osmotherley Phoenix
http://www.runfurther.com/media/pdf_race...
Distance: 33.0 miles (53.1km)
Ascent: 4,000 ft
Usual date: July
trailNorthern England
Lyke Wake
http://www.lykewakewalk.co.uk/
Distance: 42.0 miles (67.6km)
Usual date: July
trailNorthern England
Afoot in Two Dales
http://www.ldwa.org.uk/lgt/web_page.php?...
Distance: 50.0 miles (80.5km)
Ascent: 5,800 ft
Time limit: 24h
Usual date: July
loopNorthern England
Hull 24 hour
http://www.webnet.karoo.net/24hr/24hrpag...
Time limit: 24h
Best distance: 141 miles
Usual date: July
trailNorthern England
Lakeland 50
http://www.lakeland100.com
Distance: 50.0 miles (80.5km)
Ascent: 3,100m
Time limit: 24h
Best time: 12:03:00
Usual date: August
also a 100 miles
trailNorthern England
Lakeland 100 (Ultra Tour of the Lake District)
http://www.lakeland100.com
Distance: 100.0 miles (160.9km)
Ascent: 6,300m
Time limit: 40h
Best time: 23:40:00
Usual date: August
also a 50 miles
trailNorthern England
High Peak 40 Mile Challenge
http://www.highpeak40.co.uk
Distance: 40.0 miles (64.4km)
Best time: 05.31.08 ?
Usual date: September
Not to be confused with the High Peak Marathon
trailNorthern England
Bullock Smithy Hike
http://www.bullocksmithy.com
Distance: 56.0 miles (90.1km)
Best time: 08:55:00
Usual date: September
trailNorthern England
Hardmoors 60
http://www.hardmoors110.org.uk
Distance: 60.0 miles (96.6km)
Time limit: 15h
Usual date: September
trailNorthern England
Round Ripon Ultra
http://gobeyondultra.co.uk/events/round_...
Distance: 35.0 miles (56.3km)
Time limit: 10h
Usual date: October
trailNorthern England
The Original Mountain Marathon (was "Karrimor Mountain Marathon")
http://www.theomm.com
Distance: 52.4 miles (84.3km)
Ascent: 3,000m
multiday - 2 days
Usual date: October
trailNorthern England
Rowbotham’s Round Rotherham
http://www.hmarston.pwp.blueyonder.co.uk...
Distance: 50.0 miles (80.5km)
Best time: 06:17:50
Usual date: December
trailNorthern England
Bob Graham Round
http://www.bobgrahamround.co.uk
Distance: 74.0 miles (119.1km)
Ascent: 28,500 ft
Best time: 13:53:00
can be attempted at any time


Southern Scotland

trailSouthern Scotland
Glasgow-Edinburgh Double Marathon
http://www.highlandultramarathon.co.uk/i...
Distance: 55.0 miles (88.5km)
Time limit: 13h
Usual date: March
trailSouthern Scotland
Highland Fling
http://www.highlandflingrace.org
Distance: 53.0 miles (85.3km)
Time limit: 15h
Best time: 07:24:50
Usual date: April
roadSouthern Scotland
Fife AC 50K
http://bcruickshank.brinkster.net/page6....
Distance: 31.1 miles (50.0km)
Best time: 03:02:27 ?
Usual date: May
trailSouthern Scotland
Cateran Trail
http://www.cateran-trail.org
Distance: 55.0 miles (88.5km)
Time limit: 18h
Usual date: May
roadSouthern Scotland
Self Transcendence 100k
http://www.srichinmoyraces.org/uk/ultras...
Distance: 62.1 miles (100.0km)
Best time: 07:04:46 ?
Usual date: May
not sure it's still held
trailSouthern Scotland
British Ultra
http://www.britishultra.com/
Distance: 119.8 miles (192.8km)
multiday
Best time: 31:57:37
Usual date: May
6 days
trailSouthern Scotland
Sandbaggers Scottish Ultra
http://www.sand-baggers.com/ScottishUltr...
Distance: 140.0 miles (225.3km)
multidays
Usual date: May
6 days
trailSouthern Scotland
West Highland Way Race
http://www.westhighlandwayrace.org
Distance: 95.0 miles (152.9km)
Ascent: 14,760 ft
Time limit: 35h
Best time: 15:44:50
Usual date: June
trailSouthern Scotland
Devil O' The Highlands
http://devilothehighlandsfootrace.co.uk/
Distance: 43.0 miles (69.2km)
Time limit: 12h
Best time: 05:22:54
Usual date: August
roadSouthern Scotland
John Lucas Memorial Run
http://www.strathavenstriders.co.uk/
Distance: 50.0 miles (80.5km)
Usual date: August
trailSouthern Scotland
The River Ayr Way Challenge
http://www.theriverayrway.org/
Distance: 44.0 miles (70.8km)
Usual date: September
trailSouthern Scotland
Ramsay's Round
http://www.ramsaysround.com/
Distance: 56.0 miles (90.1km)
Ascent: 28,500 ft
can be attempted at any time


Northern Scotland

trailNorthern Scotland
Highland Ultramarathon
http://www.highlandultramarathon.co.uk
Distance: 200.0 miles (321.9km)
multiday
Usual date: May
6 days
trailNorthern Scotland
Lochalsh Dirty 30 Challenge
http://www.lochalsh-trails.co.uk
Distance: 30.0 miles (48.3km)
Time limit: 24h
Usual date: June
trailNorthern Scotland
Eagle Eye Ultra
http://www.eagleisleultra.com/index.php
Distance: 74.0 miles (119.1km)
multidays
Usual date: September
3 days


Multiple regions

roadUnknown
JOGLE Ultra
http://www.rorycoleman.co.uk/jogle.asp?n...
Distance: 850.0 miles (1367.9km)
multidays
Usual date: May
16 days


histogram
Note: JOGLE not represented in order to keep a decent scale.


Last update: Sat Jan 14 18:20:14 2012
89 ultramarathons - 6251 miles


done done off done (unofficial) DNF DNF

Related links: Major updates:
  • 10/07/2007: page started
  • 21/08/2008: added regions, updated all links
  • 29/11/2008: added race distances histogram
  • 14/01/2009: added region mini-maps
  • 15/02/2010: added option to sort by distance, date, region

Ultramarathon list.