Ouray 100 Mile Endurance Run
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Ouray 100 Mile Endurance Run, July 16, 2027
The event is a 100 mile trail race in Ouray, Colorado, with the course based around Fellin Park and the surrounding San Juan Mountains. The 100 mile course accumulates approximately 41,862 feet of elevation gain over fourteen climbs, including a final roughly 5,000 foot ascent to the Bridge of Heaven followed by a descent to Fellin Park and the finish area near the Ouray Hot Springs. Finishers receive a belt buckle.
Participants must complete eight hours of volunteer service prior to July 1, or opt out by making a $100 donation to the Ouray Trail Group. Entrants who have not submitted the service form or paid the opt out fee by July 10 will forfeit their registration fee and will not be permitted to participate.
The race is not a UTMB qualifier. A cash purse is offered for top finishers in the 100 mile event: $1,000 for the top male finisher and $1,250 for the top female finisher; payment is subject to urine and/or blood drug testing. Banned substances to be tested include steroids, testosterone, EPO, and THC. THC levels above 150 ng/ml will trigger a positive result.
Racers are required to carry a provided SPOT tracker during the race; runner locations will be updated approximately every five minutes. Visit the organization's website for the most recent information.
