Founded in 2003, the U.S. Open of Mountain Biking was established to reinvigorate interest in American gravity racing at a point in time where neglectful sanctioning bodies and sponsors of yesteryear had stripped the U.S. racing scene of its identity, its soul and its mainstream appeal. In conjunction with a dedicated event staff, as well as support from the global racing community, industry sponsors and influencers, the U.S. Open of Mountain Biking has quickly become the United States marquee gravity event by providing a world class venue, in a convenient location with an unmatched prize purse.   Since 2003, top gravity racers from across the globe have attended the U.S. Open of Mountain Biking in an attempt to capture America's most prestigious  and coveted title. Prestige. Honor. Bragging Rights. In 2011 the U.S. Open of Mountain Biking will play host to over 500 athletes all battling for a piece of over $50,000 in cash and prizes.   Featuring a unique and 'open', Pro/AM format, the U.S. Open offers the most challenging and competitive racing in the nation and sets the standard as a proving-ground for up-and-coming and elite racers alike. Don't miss this chance to make your mark; it is you versus the world on May 27th!