Trail Running calendar near Carbondale 2025-2026

The World Championship Pack Burro Race, held annually in Fairplay, Colorado, is a historic and challenging event dating back to 1949. Participants race alongside their burros on two course options: a short course of approximately 12.3 miles featuring steep ascents, descents, and scenic mountain view..

The Summit 200 is a challenging 200-mile mountain ultramarathon held in Summit County, Colorado. The race features a single 200-mile loop traversing stunning hiking trails, recreation paths, forest roads, and some pavement, with elevations ranging from over 9,000 feet to nearly 13,000 feet. Runners..

The Emerald Mountain Epic will take place in Steamboat Springs from Saturday 2 August 2025 to Sunday 3 August 2025.

The Sheep Mountain Trail Runs, part of the Human Potential Running Series, take place in Fairplay, Colorado, featuring challenging courses at an average elevation over 10,600 feet. The event offers three distances: a 50-mile ultra, a 50k, and a half marathon, catering to both ultra runners and those..

The Aspen Backcountry Marathon, held in Aspen, Colorado, offers three trail running distances: a 50K ultra, a marathon, and a heavy half-marathon. The courses run almost entirely on dirt trails featuring diverse terrain with challenging ascents, descents, and significant elevation gain, peaking abov..

The TransRockies Run is a challenging six-day, 120-mile stage race held in Colorado, offering participants an unforgettable trail running adventure through the Rocky Mountains. Known for its supportive and vibrant community atmosphere, the event combines rigorous mountain terrain with camaraderie an..

The Run the Rockies Trail Race in Frisco, Colorado, offers 5k, 10k, and half marathon distances along scenic trails on the Frisco Peninsula. The course features single track and dirt road trails with stunning views of Dillon Reservoir and the Ten Mile Range. Starting and finishing at the Frisco Nord..

Pyro's Push It Up Trail Run is a scenic mountain trail race held in New Castle, Colorado, within the Flat Tops-White River National Forest. Participants can choose from three distances: a family-friendly 3.5K, a moderate 7.7K, or a challenging 13K "Double Down" course. The trail features beautiful A..

The Buena Vista Pack Burro Race, held in Buena Vista, Colorado, is a unique 14-mile pack burro running event and the third leg of the 2025 PBR Triple Crown. Participants race alongside their burros, donkeys equipped with pack saddles carrying prospector gear, over challenging terrain that reflects t..

The Leadville Trail 100 Mile Run, held annually in Leadville, Colorado, is a legendary ultramarathon known as the "Race Across the Sky." Established in 1983, this grueling 100-mile out-and-back course challenges runners with extreme Rocky Mountain terrain, starting at 10,200 feet and reaching a peak..

The Arrowhead Half Marathon & 5K is a scenic trail running event held in Arrowhead, Colorado, part of the Vail Trail Running Series. The half marathon covers approximately 13.7 miles with a challenging 2,924 feet of elevation gain, traversing trails across Arrowhead, Bachelor Gulch, and Beaver Creek..

The Continental Divide Trail Run, held in Steamboat Springs, Colorado, offers three trail race distances: 5 miles, 16 miles, and 50 kilometers. The courses feature scenic routes through aspen and pine forests with expansive views of the Yampa Valley. The 16-mile race includes over 3,500 feet of elev..

The Grand Traverse Mountain Run is a challenging 40-mile point-to-point ultramarathon from Crested Butte to Aspen, Colorado, traversing the Elk Mountains with over 6,000 feet of elevation gain. Held annually, the race follows the route of the Grand Traverse Backcountry Ski race, offering runners a r..

The 10k @ 10,000 Feet is a challenging trail running event held at the summit of Rabbit Ears Pass near Steamboat Springs, Colorado. Known for its stunning mountain scenery, the race features a course starting at 10,000 feet elevation, with an uphill segment on US Forest Service dirt roads followed b..

The Cirque Series at Arapahoe Basin, Colorado, is a challenging mountain trail race held on September 6, 2025. Covering approximately 9.4 miles with 2,411 feet of vertical gain, the course starts at 10,780 feet at Mountain Goat Plaza and ascends through scenic trails including the A-Basin summer roa..

The Breckenridge Oktoberfest 5K is a festive running event held in historic downtown Breckenridge, Colorado, as part of the larger Oktoberfest celebration. This 5K trail run takes participants through scenic Town of Breckenridge Trails, showcasing beautiful fall foliage and changing aspens. The race..

Run Rabbit Run is a challenging ultramarathon event held in Steamboat Springs, Colorado, featuring 50-mile and 100-mile races through the scenic Routt National Forest. The 50-mile course starts at the Steamboat Springs ski area (6,900 ft elevation), ascending to Mount Werner (10,568 ft), crossing th..

The Lead King Loop 25K is a scenic running, walking, or hiking event held in the heart of Colorado's Elk Mountain Range near Marble. Participants traverse a 25-kilometer loop around Lead King Basin, passing iconic landmarks such as the Crystal Mill and the Town of Crystal. The race takes place amid..

The Crested Butte Ultra, held in Crested Butte, Colorado, offers runners a challenging and scenic experience through the Gunnison National Forest. The event features three distances: a 50-mile, 55K, and 35K race. Participants traverse single-track trails that wind through mountain meadows, ridges, a..

The Emerald Mountain Trail Run takes place in Steamboat Springs, Colorado, offering two race distances: a 12k (approximately 7.75 miles) and a 4-mile run. The scenic course starts at the base of Howelsen Hill and winds through aspen-lined single-track trails on Emerald Mountain. The event welcomes h..