Ouray 100 Mile Endurance Run

The Ouray 100 Mile Endurance Run is a challenging ultramarathon set in the breathtaking San Juan Mountain range of Colorado. Participants face approximately 42,000 feet of elevation gain, making it one of the toughest endurance events. The race culminates at the Bridge of Heaven, followed by a descent to Fellin Park, where finishers receive a coveted belt buckle.

To participate, runners must complete eight hours of volunteer service or opt out with a donation. The event emphasizes a no-frills, traditional approach to racing, celebrating the struggle over mere participation. Cash prizes are awarded to top finishers, subject to drug testing. Visit the organization's website for the most recent information.