Well, everything is in the title... I've been increasingly asked to use GoogleEarth for my para-academic activities. Just to see how it looks like, I've imported some old GPS track into GoogleEarth. Note that the free version doesn't allow that directly, but a couple of lines of Python can convert very easily any route file into KML. The blue sections were missing and have been drawn by hand. Enjoy.

GoogleEarth - London to Brigthon
Click to download the file

Ultra track.