Trail Running calendar near Morrison 2026-2027

A longstanding Nederland, Colorado running event offering a 5K road run, a 10K trail, and a trail half marathon, with family-friendly features, on-leash dogs allowed in the 5K, and costume encouragement.

A trail running festival at Snow Mountain Ranch in Granby, CO featuring 50 km, 33 km, half marathon, 10 km and 5 km courses on dirt and grass trails with significant elevation, aid stations, drop bag support, and on site lodging and camping..

A 13.5 mile trail half around Lory State Park near Fort Collins with about 2,000 feet of climb, marked singletrack, aid stations, and a free one mile kids race.

High altitude trail races in Empire, Colorado offering 50K and 22K point to point courses with significant elevation gain and remote terrain.

Trail Sisters Women's Half Marathon and 10K in Buena Vista, Colorado, feature trail courses through sagebrush and ponderosa pines with views of the Collegiate Peaks, and offer both group and solo participation options.

Trail races on Meadow Mountain in Minturn offering 11K and 5K courses on singletrack and dirt trail, with aid stations, post-race refreshments, and series awards.

Trail race fundraiser at North Table Mountain in Golden CO on Sept 19 2026 featuring a 10Mi North Table Loop and a 5Mi Breaking Dawn Fiver.

A 13.32 mile ascent from Manitou Springs to the summit of Pikes Peak with about 7,867 ft of elevation gain on September 19, 2026.

Experience a 26.2 mile mountain run from Manitou Springs to the summit of Pikes Peak and back. This historic event features over 7800 feet of elevation gain and a 10 hour time limit.

A day of youth and adult cross country races in Aurora, Colorado on September 20, 2026, featuring grass courses with small undulations, a creek crossing, and bale jumps; distances run from 2k youth races up to a 5k open race.

Experience desert style single track and forest roads with views of the Collegiate Peaks in Buena Vista. Choose between 50k or 30k distances as part of the multi sport 14er Fest.

Tough Mudder Colorado takes place at Fort Carson on September 26, 2026. Runners can choose a 15K with 20+ obstacles or a 5K with 12+ obstacles, with spectator and group options available.

A 24 hour loop endurance run in Palmer Lake, CO on a 0.82 mile course at 7,240 feet, with distance awards and guaranteed buckles for early 100 mile finishers.

A two-day trail and bike event in Estes Park featuring 31-mile bike and run options, a 15-mile heavy half, and a 62-mile duathlon, with rugged trails, significant climbs, and aid stations supporting competitors.

A point to point trail race from Vail to Minturn with 26K and 14K options across Vail Mountain, high alpine singletrack, staffed aid stations and postrace awards.

A *5K* trail run on Town of Breckenridge Trails that finishes at Blue River Plaza on Main Street during Breckenridge Oktoberfest. Field limited to 300 runners; first 250 registrants receive a long-sleeve technical tee and 21+ entrants get a..

A six hour trail challenge of repeating a 5K loop each hour; finish all six to earn the OUTLAST medal and a place on the national leaderboard.

A high alpine 50k in Nathrop, Colorado, featuring Colorado Trail singletrack, about 7,000 ft of climb and panoramic Sawatch Range views.

A fall trail event in Buena Vista, Colorado on September 27, 2026 offering a 14K trail race with over 500 feet of elevation gain and a 5K along the Arkansas River. Both races start and finish at Vendor Village near the Eddyline Beer Garden.

The 4th annual Greenland Open Space Pack Burro Race in Larkspur, Colorado offers 8 Mile and 3 Mile pack burro divisions. Teams must register a burro partner, follow animal welfare rules, and the field is limited to 75 participants.