This is the ultimate test of mountain biking endurance. It's you, the clock, and inspiring terrain at the center of one of America's great cities on the western frontier.

To Order Photos from the Event

Sept. 29-30, 2012

Sept. 29-30, 2012

Oct. 1-2, 2011

Oct. 1-2, 2011

Sept. 18-19, 2010

Sept. 18-19, 2010