Trail Running calendar near Marble 2026-2027

Run scenic mountain trails around Aspen Snowmass at the Audi Power of Four Trail Run on July 18, 2026. Choose from 10K, 25K or an epic 50K and enjoy challenging terrain, alpine views and Audi supported race day energy.

A three-day, fully supported trail stage race across the Colorado continental divide with Full Pint and Half Pint options, nightly camps, meals, showers and athletic therapy. Limited to 500 runners.

Trail ultras of 50 miles, 55K and 30K on Grand Mesa in Colorado with mountain single track, alpine meadows and lakes. Camping options are available and the event includes cash prizes, finisher awards and post race amenities.

Course and Terrain The Summit 200 is a 200-mile single-loop ultramarathon in Summit County, Colorado. The non-repetitive course utilizes hiking trails, 4WD roads, and recreation paths, with the majority being single-track trail and infreque..

High-elevation trail and ultra races around Fairplay, Colorado, with 50 Mile, 50k and Half Marathon options, technical and remote terrain, aid stations, drop bags, pacer rules, and a 16 hour time limit.

Explore the high alpine trails surrounding Aspen, Colorado, in this trail running event. Choose from three distances—50K, marathon, or heavy half marathon—on scenic dirt paths. The finish line at Rio Grande Park coincides with a community f..

The Buena Vista Pack Burro Race offers a unique running experience in Colorado. Participants can choose a long or short course, racing either with or without a burro. The event includes finisher gifts, a meal, and awards for top finishers.

A self directed mountain 100 mile route from and back to Lake City with 24 required points, an estimated 90 to 105 mile practical route, and a 48 hour cutoff.

Event Overview Run the Rockies Trail Race is a trail running event held in Frisco, Colorado. The event offers three distances: a 5 km, a 10 km, and a half marathon. All races start and finish at the Frisco Nordic Center on Recreation Way. C..

The Leadville Trail 100 Run is a legendary 100-mile ultramarathon in the Colorado Rockies. With over 15,000 feet of elevation gain and a summit over 12,500 feet at Hope Pass, it's a massive high-altitude challenge. Finishers within 30 hours..

Experience the high-altitude scenery of Leadville on this 10K course, which follows the first and final miles of the famous LT100 Run. With a single aid station and awards for top finishers, it's a classic mountain run. Registration is open..

Event Overview The Arrowhead Half Marathon & 5K is a trail running event held in Arrowhead, Colorado, as part of the Vail Trail Running Series. The event features two race distances: a half marathon (21.4K / 13.3 miles) and a 5K (5.6K /..

This 40-mile point-to-point ultramarathon traverses the Elk Mountains from Crested Butte to Aspen, with over 6,000 feet of elevation gain. The event requires mandatory backcountry gear and supports Colorado Search and Rescue. Registration o..

A mountain trail race at Arapahoe Basin on September 5, 2026 covering *9.4 miles* and *2,211 ft* of ascent, with Sport, Expert and Pro divisions, a 700 runner cap, on course aid stations and category prizes.

The Trail Sisters Women's Half Marathon & 10k is a women's trail running weekend in Buena Vista, Colorado. The courses travel through sage and pine terrain with views of the Collegiate Peaks. It's presented as a supportive community event f..

Run through the fall colors of the Elk Mountains in Marble, Colorado. Choose from a scenic 25K, an 8-mile climb, or a kids 2.5K. All proceeds support the local charter school and registration includes a shirt, BBQ, and a finisher medal.

A 13 mile mountain trail run in Ouray, Colorado that funds the Ouray School; the course starts and ends at Fellin Park, features limited cup water stations, packet pickup before race day, and awards for top finishers.

The Crested Butte Ultra offers three trail distances in Colorado's Gunnison National Forest. Runners experience single track trails through mountain meadows and ridges with scenic views.

Event Overview The West Line Winder is a trail running event taking place in Buena Vista, Colorado. It is part of the larger 14er Fest, a festival held in late September that aims to unite various trail user groups. The event is organized b..

This bucket-list half marathon runs from Snowmass to downtown Aspen on the scenic Government Trail. It sells out quickly, with registration opening each May for the late September race.