I though I would come in here and post a link to the "Ride the Rockies" bike Race here in Colorado. :D
http://www.ridetherockies.com/

about 7 years ago we took my youngest son to the rocky mountain national park to ride his mountain bike. we took the ridge road up to the conveinecnce store.i think it was at about the 10,000 ft. level.... it was real hard for me to breath while walking then. i can only imagine what it would do to me now! haha.. it was a 21 mile down hill ride for him. and he was flying in high gear and pumping that bike like there was no tommorrow. it scared the beans out of me, but i got some good pics of him while we were there! what a beautiful ride that was!

WOW I dont know they make those pics change in photo gallery. But in sure is neet. jmann