Ouray 100 Mile Endurance Run

The Sky Pilots Ouray Backyard Ultra is a unique running event taking place in Ouray, Colorado. Participants tackle a 4.167-mile course, with the challenge of completing each lap within an hour to continue racing. The event continues until only one runner remains, who must finish one more lap than th..

The San Juan Solstice 50 Mile Run is an annual ultra-marathon held in Lake City, Colorado, typically around the Summer Solstice. Established in 1995, the event has evolved into a community benefit for local EMTs. The race features a challenging course that includes high mountain terrain and varying ..

The Hardrock 100 is a challenging 100-mile ultramarathon held in the San Juan Mountains of Colorado. Participants face a total elevation change of 66,394 feet, with an average elevation of over 11,000 feet, making it one of the toughest endurance runs in the world. The course features a mix of 4WD r..

The Silverton Alpine Marathons, taking place in Silverton, Colorado, offers an exhilarating trail running experience through the stunning San Juan Mountains. Participants can choose from three race distances: a 50K, a marathon, or an 8-mile run, all set against a backdrop of historic mining ghost to..

The Kendall Mountain Run, taking place in Silverton, Colorado, features a challenging 12-mile and 11K race that ascends to the summit of Kendall Mountain, reaching an elevation of 13,066 feet. Participants will experience a thrilling climb along jeep roads, culminating in a vertical scramble to the ..

The Box Canyon Trail Races, set in the scenic high country of Telluride, Colorado, features two challenging events: the Bridal Veil 30K and the Bear Creek 10 Mile. Participants will experience breathtaking views as they navigate varied terrain, including alpine meadows and steep ascents. The 30K rac..