Trail Running calendar near Mount Princeton 2026-2027

The Staunton Rocks will take place in Conifer on Saturday 22 August 2026. You can run between 13 and 26 miles.

A trail half marathon and a mostly downhill 5.6K through Arrowhead, Bachelor Gulch and Beaver Creek. The half covers 13.3 miles with about 2,844 feet of ascent, aid stations on course, postrace food, t shirts and age group awards.

A 40 mile point to point mountain ultramarathon from Crested Butte to Aspen across the Elk Mountains, the Grand Traverse follows the backcountry ski route and raises funds for Crested Butte Nordic while providing mandatory backcountry gear..

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.

A multi-distance trail event in Creede, Colorado, the Creede Mountain Run routes runners from the historic town into high-elevation mountain terrain with alpine single track, mining-era sites, and enforced cutoffs for the 22 Mile and 50K co..

Point-to-point trail race in Empire, Colorado with 50K and 22K options, both on dirt single-track and reaching above 13,000 feet. Prior ultra experience is required for the 50K and cut-off times are enforced.

The Trail Sisters Women's Half Marathon will take place in Buena Vista on Saturday 12 September 2026. You can run between 10 and 21 kilometers.

Test yourself on the iconic Pikes Peak Ascent, a 13.3 mile run from Manitou Springs to the summit with breathtaking views and huge elevation gain. A bucket list challenge for runners who crave high altitude adventure.

A 26.2 mile out-and-back marathon from Manitou Springs to the summit of Pikes Peak and back, held on September 20, 2026, with 7,834 ft of elevation gain and open to runners aged 16 and older.

A multi-distance trail festival in the Sangre de Cristo Mountains near Westcliffe, Colorado offering 8 Mile, 27k, 50k, 50 Mile, 100k and 100 Mile races. Courses follow the Rainbow Trail and include camping, aid stations and drop-bag options..

A trail ultramarathon in Crested Butte, Colorado offering 35K, 55K and 50 mile courses through Gunnison National Forest, with cupless aid stations, downloadable course files, and on site packet pickup at the community school.

A trail running event in Buena Vista, Colorado offering 50k and 30k courses on high elevation singletrack and forest roads with views of the Collegiate Peaks. The event is organized by Freestone Endurance and hosted alongside 14er Fest.

A 24-hour loop endurance run on a 0.82 mile course atop the Palmer Divide at 7,240 feet. Prizes are awarded by distance and the first ten runners to reach 100 miles receive a buckle; a portion of registration fees supports local parks.

A high alpine 50k in Nathrop, Colorado on September 27, 2026. The 33 mile course gains about 7,000 feet, runs largely on singletrack and the Colorado Trail, and includes three aid stations and an 11 hour cutoff.

A trail race at Hartman Rocks near Gunnison, Colorado, offering 50K, 28K and 15K options on slickrock, singletrack and doubletrack. The course features rolling hills, a high desert climate, and wide mountain views.

Mountain trail event near Pikes Peak offering 50K and 10K courses around Rampart Reservoir with multiple aid stations, crew access for the 50K, packet pickup, and on course food options.

A point to point trail event in Colorado offering a full marathon and a 30K route through forests, aspen slopes, and mountain passes during peak fall color, with aid stations and shuttle service.

On October 3, 2026 runners can choose a 5K road race, an 8 mile trail, or a 13.1 mile trail half marathon near the Royal Gorge Bridge. The weekend also includes a free kids Dinosaur Dash and a virtual race option.

Run the Rubey Rescue Run, a challenging 5K uphill trail in Aspen that climbs to the Cliff House with sweeping Maroon Bells views. Timed and dog friendly, the October race raises funds for the Aspen Animal Shelter.

A four-race fall cross country series across Colorado Springs parks with trail distances from 3.8 to 7.4 miles, chip timing, and series awards given after completion of all four races.