GDBR 2007 starts today
I know this is a mountain bike race but it is also the longest off road long distance self supported endurance race in the world and I think it's mention belongs here.
The races starts today at high noon. And runs from the Canadian/US border to Mexico along the spine of the continent.
Audio updates can be heard from this site:
And more info on the race is available here:
25 racers started this year which is a lot more than the usual 8-10. Typically, only around 20-30 percent of the field will finish.