Hardrock 100

The Ouray 100 Mile Endurance Run is a challenging ultramarathon held in Ouray, Colorado, nestled in the scenic San Juan Mountains. Covering 100 miles with an elevation gain of approximately 41,862 feet, the course features fourteen significant climbs, including a final 5,000-foot ascent to the Bridg..

The Silverton Alpine Marathons, held in Silverton, Colorado, offer runners a challenging and scenic trail experience in the San Juan Mountains. Participants can choose from three distances: an 8-mile out-and-back, a marathon (~26.7 miles), and a 50K (~31.8 miles). The marathon and 50K courses follow..

The Kendall Mountain Run is an annual mountain running event held in Silverton, Colorado, featuring two main distances: a challenging 12-mile race and an 11K. Starting at 9,318 feet in downtown Silverton, runners ascend jeep roads to a thrilling final scramble near the 13,066-foot summit of Kendall..

The Box Canyon Trail Races in Telluride, Colorado, offer two challenging and scenic mountain runs: a 30K and a 10-mile race. The 30K is a tough loop featuring about 5,800 feet of elevation gain, passing landmarks like Bridal Veil Falls, the Smuggler-Union Hydroelectric Plant, and reaching a high poi..

The High Five 100 is an extreme ultra-endurance running challenge held in Lake City, Colorado. Covering an estimated 90 to 105 miles with over 40,000 feet of elevation gain, the course requires runners to summit five 14,000-foot peaks and six 13,000-foot peaks in the rugged San Juan Mountains. Parti..

The Telluride Mountain Run, held in Telluride, Colorado, is a demanding mountain race set in the San Juan Mountains. It offers three challenging distances: 40 miles, 24 miles, and 13 miles. The course features old mining roads, singletrack trails, alpine tundra, exposed ridgelines, and high summits,..