Trail Running calendar near Gunnison 2025-2026

The Collegiate Peaks Trail Run is a celebrated annual event in Buena Vista, Colorado, marking its 35th anniversary in 2025. It features two race distances: a 25-mile and a 50-mile course, both offering challenging terrain along scenic trails near the Arkansas River. The race course includes single-t..

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 complete one additional lap..

The Dynafit Boneyard Boogie 5K/13K will take place in Eagle on Saturday 17 May 2025. You can run between 6 and 14 kilometers.

The Mt Sopris Run-Off is an exciting trail running event held in Carbondale, CO, featuring two race distances: 10 miles and 25k. Scheduled for May 18, 2025, the race takes participants along the scenic "Up & Over" single track trail, starting at Flying Dog Ranch and finishing at Rock Bottom Ranch. T..

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 running event set around the picturesque Turquoise Lake in Leadville, Colorado. Participants will experience breathtaking mountain views as they navigate a course that combines 6.5 miles of hilly paved roads with 5.5 miles of single-track dirt trails. The..

The Fish Hatchery 5K Trail Run is an exciting running event set in the picturesque surroundings of the Leadville National Fish Hatchery in Colorado. Participants will enjoy a scenic cross-country course that meanders through subalpine forests and alongside the Evergreen Lakes and lower Rock Creek ar..

The San Juan Solstice 50 Mile is an ultramarathon held annually in Lake City, Colorado, around the summer solstice. Established in 1995, the race benefits Lake City EMTs and features a challenging course through high mountain terrain, including creek crossings and snowfields. The event attracts arou..

The Leadville Trail Marathon and Heavy Half is a challenging running event held in the historic mining district of Leadville, Colorado. Participants can choose between a 26.4-mile marathon or a 15.4-mile Heavy Half, both featuring breathtaking views and high-altitude trails, with the marathon reachi..

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 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 in the San Juan Mountains of Colorado. It features approximately 66,000 feet of elevation change, with an average elevation of over 11,000 feet and peaks exceeding 14,000 feet. The race traverses rugged terrain, including dirt trails, 4WD..

The Silverheels Trail Runs, organized by the Human Potential Running Series, is an annual mountain ultramarathon event held in Colorado’s stunning Front Range. The 2025 edition features multiple race distances, including a 100-mile, 100k, 50-mile, 60k, 19-mile, 10-mile, and 11th annual 100k, with ra..

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 that tests participants' endurance and grit against the stunning backdrop of the Rocky Mountains. The course features approximately 8,000 feet of elevation gain, taking runners through historic mining districts and offering breathtakin..

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 set in the breathtaking San Juan Mountain range of Colorado. Participants will face approximately 41,862 feet of elevation gain, making it one of the toughest endurance events. The race features stunning views and demanding climbs, culm..

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, taking place in Silverton, Colorado, offers an exhilarating experience for runners of all levels. Participants can choose from three distances: a 50K, a marathon, or an 8-mile run, all set against the stunning backdrop of the San Juan Mountains. The courses traverse h..

The Kendall Mountain Run, taking place in Silverton, Colorado, is a challenging running event featuring a 12-mile race and an 11K option. Participants will ascend from 9,318 feet to the summit of Kendall Mountain at 13,066 feet, culminating in a thrilling scramble for breathtaking views of the San J..