I registered today for the Everest Challenge 2-Day Stage Race, the most challenging USA Cycling Race race in the USA, September 24/25, 2011. See my eight page discussion of this race.
2 days · 208 Miles · 29,035 feet of climbing.
It’s not just the climbing and the distance, it’s the 60° F temperature variation— when I last did it in 2004, it ranged from 34° F to at least 95° F, but that’s understating the tandoori oven effect of certain climbs up canyons.
Look what happened to this racer who didn’t hydrate properly.