Trail Running calendar near South Fork 2025-2026

The San Juan Solstice 50 Mile is a challenging ultramarathon held annually near Lake City, Colorado, typically around the summer solstice in June. Established in 1995, the race covers a 50-mile course through high mountain terrain, including snowfields and creek crossings on the Continental Divide...

The John Cappis is a challenging 50K mountaineering event held near Silverton, Colorado, featuring approximately 19,000 feet of elevation gain across rugged terrain. Participants summit several peaks around Silverton on an unmarked, mostly off-trail course with elevations ranging from 9,300 to 13,30..

The Hardrock 100 is a challenging 100-mile ultramarathon held annually in the San Juan Mountain Range of southwestern Colorado. The race features a counter-clockwise loop course that traverses rugged backcountry terrain, including 4WD roads, dirt trails, and cross-country sections. Runners experienc..

The High Lonesome 100 is a challenging 100-mile trail race set in the stunning Sawatch Range of the Colorado Rocky Mountains. Participants will experience a grueling course featuring 23,500 feet of vertical gain, reaching elevations of 13,100 feet. The race includes a loop that traverses beautiful s..

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 approximately 41,862 feet of elevation gain, the course features fourteen major climbs, including a final 5,000-foot ascent to the Bridge of Heav..

The Silverton Alpine Marathons, held in Silverton, Colorado, offer trail running events including a 50K, marathon, and 8-mile race through the scenic San Juan Mountains. The courses follow the historic Alpine Loop jeep roads, passing ghost mining towns like Howardsville, Eureka, Animas Forks, and Gl..

The Kendall Mountain Run is a challenging mountain race held annually in Silverton, Colorado. It features two distances: a 12-mile course and an 11-kilometer course. Starting at 9,318 feet in downtown Silverton, runners ascend jeep roads to a thrilling final scramble to the summit of Kendall Mountai..

The Creede 100 is a challenging 100-mile ultramarathon held in Creede, Colorado, a historic mining town. The race features a scenic and rugged course through the San Juan Mountains, climbing above 12,000 feet and traversing the Continental Divide for 25 miles. Runners experience breathtaking views,..

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 and the Smuggler-Union Hydroelectric Plant, reaching a high poin..

The High Five 100 is an extreme ultra-endurance running challenge held in Lake City, Colorado. Covering approximately 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 within 48 hours. Unlike traditional ra..

The San Juan Softie 100 is a challenging 100-mile ultramarathon held in Durango, Colorado, traversing the scenic San Juan Mountains. The course features an average elevation near 10,000 feet and includes over 20,000 feet of vertical gain, making it a demanding mountain race. Participants experience..

The Rio Grande 100 is an ultramarathon held in South Fork, Colorado, starting and finishing along the Rio Grande River. The challenging 100-mile course traverses the stunning La Garita Mountains, featuring diverse terrain from arid forests to alpine tundra, with four ascents above 12,000 feet. Runne..

The Telluride Mountain Run, held in Telluride, Colorado, is a demanding mountain race set in the scenic San Juan Mountains. Offering three distances—40 miles, 24 miles, and 13 miles—this event challenges runners with technical terrain including old mining roads, singletrack trails, alpine tundra, ex..

The Creede Mountain Run, held in Creede, Colorado, is a challenging mountain race established in 1987 that celebrates the transition from summer to fall. Set in the scenic San Juan Mountains, the event offers four race distances: 2 miles, 12 miles, 22 miles, and a 50K ultra. The courses start in the..

The Ouray 50 Mile Endurance Run, held in Ouray, Colorado, is a challenging mountain ultramarathon featuring approximately 23,582 feet of elevation gain. Known for its technical and demanding trails, the course is set nearly two miles above sea level amidst stunning mountain scenery. This race is des..

The Blisters & Brews Telluride 5k will take place in Telluride on Saturday 13 September 2025. You can run between 5 and 5 kilometers.

The Ouray Mountain Trail Run is a challenging 13-mile race held in the scenic mountains of Ouray, Colorado, starting and finishing at Fellin Park. Participants are treated to stunning views and the unique charm of the town. This event serves as a fundraiser for the Ouray School, supporting education..

The Sangre de Cristo Trail Festival, held near Westcliffe, Colorado, offers a rugged and scenic ultramarathon experience on the Rainbow Trail in the Sangre de Cristo Mountains. Participants can choose from distances including 8-Mile, 27k, 50k, 50-Mile, 100k, and 100-Mile, all running along the wilde..

The Deep Creek Trail Half Marathon is a scenic 13-mile trail race held near Telluride, Colorado. Starting at the Telluride Airport on Last Dollar Road, runners descend to Deep Creek Corral before entering singletrack trails through aspen-filled woods along Deep Creek. The course offers a mix of terr..

The Sage Burner Trail Race takes place in the scenic Hartman Rocks Recreation Area near Gunnison, Colorado, surrounded by sagebrush-covered hills and offering stunning 360-degree views of the Maroon Bells, San Juan Mountains, and Gunnison Basin. This challenging trail event features distances of 50K..