Trail Running calendar near Gunnison 2025-2026

The Spirit Trail Race is a running event held in Buena Vista during Memorial Day Weekend, featuring a marathon, half-marathon, and 9K race. Participants start at the South Main Town Square area, with race times beginning early in the morning. The event supports local organizations such as the Buena..

The Leadville Turquoise Lake 20K is a scenic mountain race held in Leadville, Colorado, featuring a 20-kilometer course around Turquoise Lake. The route begins with 6.5 miles of hilly paved road, followed by 5.5 miles of single-track dirt trail, offering runners stunning views of the surrounding mou..

The Fish Hatchery 5K Trail Run takes place at the historic Leadville National Fish Hatchery in Leadville, Colorado. This scenic 5K features a cross-country style course that winds through subalpine forest areas near Evergreen Lakes and lower Rock Creek. The route includes a mix of dirt roads, paths,..

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 along the Continental Divid..

The John Cappis is a challenging mountain endurance event held in Silverton, Colorado, on June 28, 2025. It features a roughly 50-kilometer course with approximately 19,000 feet of elevation gain, traversing peaks in the San Juan Mountains. The course is mostly off-trail and unmarked, requiring GPS..

The Leadville Trail Marathon and Heavy Half are challenging trail running events held in Leadville, Colorado, traversing historic mining district trails. The marathon covers 26.4 miles with 6,167 feet of elevation gain, while the Heavy Half is 15.4 miles with 3,421 feet of gain. Both courses reach t..

The Alma Foundation Race in the Clouds Dirt Festival is an exciting outdoor event taking place in Alma, Colorado, from July 10 to July 13, 2025. Set at an elevation of 10,600 feet, the festival features a variety of activities including mountain bike racing, trail running, a free kids' race, and an..

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 Silverheels Trail Runs, hosted by the Human Potential Running Series, is a premier ultra running event held in Como, Colorado, featuring races at high elevations averaging over 10,000 feet. The event offers multiple distances including 10-Mile, 19-Mile, 60k, 50-Mile, 100k, and a challenging 100-..

The Grin & Bear It is Crested Butte’s oldest trail running event, featuring a 15 km out-and-back race and a new 25 km loop, both starting and ending at the Crested Butte Nordic Center. The event takes place in July and offers scenic routes through mountain trails with significant elevation changes,..

The Leadville Silver Rush 50M is a challenging 50-mile trail run held in Leadville, Colorado, featuring 7,503 feet of elevation gain and reaching altitudes up to 12,024 feet. The out-and-back course traverses historic mining roads on the east side of Leadville, offering stunning views of the Rocky M..

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 Audi Power of Four Trail Run is an exciting running event set in the scenic mountains of Aspen Snowmass. Participants can choose from three different race distances: a challenging 50K, a 25K, and a 10K run, catering to various skill levels. This event not only offers a chance to enjoy the beauti..

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 11K, both starting in downtown Silverton at 9,318 feet elevation. The 12-mile race ascends jeep roads to a thrilling final scramble to the summit of Kendal..

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, feature two challenging mountain courses: a 30K and a 10-mile race. The 30K course offers a scenic loop through high alpine terrain with approximately 5,800 feet of vertical gain, passing iconic landmarks like Bridal Veil Falls and reaching elevatio..

The Grand Mesa Ultras, held on the Grand Mesa in Colorado, offers mountain trail races including a 50-mile, 55K, and 30K distance. Set on the world's largest flat-topped mountain with an average elevation over 10,000 feet, the event features challenging, technical trails with rocky climbs, fast fore..

The Sheep Mountain Ultras, part of the Human Potential Running Series, is a challenging trail running event held annually in Fairplay, Colorado. The race offers three distances: a 50-mile ultra, a 50k, and a half marathon, all starting and finishing at the Town of Fairplay Beach. Set at an average e..