Ouray 100 Mile Endurance Run
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Ouray 100 Mile Endurance Run - July 16, 2027
The Ouray 100 Mile Endurance Run is a trail ultramarathon held in Ouray, Colorado, organized by Ouray Ultras and based at Fellin Park. The main event is a 100 Miler with an advertised elevation gain of 41,862 Feet and fourteen distinct climbs. The final major climb gains about 5,000 feet and tops out at the Bridge of Heaven before a descent back to Fellin Park and the Ouray Hot Springs.
The event requires each participant to complete eight hours of volunteer service prior to July 1 or pay a $100 opt out donation to the Ouray Trail Group; entrants who do not submit the service form or pay the opt out fee by July 10 will forfeit their registration. The race is not a UTMB qualifier.
A cash purse is listed for top finishers with amounts of $1,000 for the top male 100 mile finisher and $1,250 for the top female 100 mile finisher. Payment of awards is contingent on the results of urine and/or blood testing administered to winners after the event. Substances to be tested include, but are not limited to, steroids, testosterone, EPO, and THC with a THC threshold noted at 150 ng/ml.
Racers must carry a provided SPOT tracker during the race. Live location updates will be provided approximately every five minutes. Pre-race packet pickup and an optional pre-race talk are scheduled the day before at Fellin Park, with race-day packet pickup at Fellin Park as well. Visit the organization's website for the most recent information.
