Trail Running calendar near Como 2026-2027

A high altitude trail event in Granby, CO offering 50K, 33K, half marathon, 10K and 5K courses on dirt trails with measured elevation gain and support stations.

Trail ultramarathon in Empire, Colorado on September 12, 2026 offering point to point 50K and 22K courses. High altitude routes reach over 13,000 feet and prior ultra or high altitude trail experience is required or recommended.

A women's trail running event in Buena Vista, Colorado offering a Half Marathon and a 10k on mountain trails with views of the Collegiate Peaks and the Arkansas River. Organized by Trail Sisters to increase women’s participation in trail ru..

A trail race on Meadow Mountain in Minturn, Colorado offering an 11K and a 5K route across singletrack and meadows with stream crossings, scenic mountain views, on-course aid stations, and finish-line t-shirts and refreshments.

A fall mountain event on September 13, 2026 featuring a 25K loop past Crystal Mill, an 8 mile Quarry Climb, and a 2.5K kids run, with a post-race BBQ and proceeds benefiting Marble Charter School.

A trail race in Golden, CO featuring a 10-mile North Table Loop with bonus miles and a 5-mile route on Lithic Trail and Fairmount Canal Loop. Organized by BeyondHome to support families moving from homelessness to self-sufficiency.

A 13.3 mile mountain race from Manitou Springs to the 14,115 foot summit of Pikes Peak, gaining about 7,800 feet on the historic Barr Trail. The 2026 Ascent uses wave placement based on estimated times and invites elite competitors.

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.

Expo Park XC is an old school grass cross-country meet in Aurora, Colorado, featuring creek crossings, a wooden footbridge and bale jumps. Races range from about 1 km for young children to a 5 km open race.

Experience the mountain ridges and meadows of Gunnison National Forest at the Crested Butte Ultra. Choose between 35K, 55K, and 50 mile distances on single track trails with stunning fall foliage.

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 at Fort Carson on September 26, 2026 offers 15K and 5K obstacle courses with multiple obstacles and finisher items. Spectator passes, group packages, VIP options and volunteer programs are available.

A 24 hour loop endurance run on a 0.82 mile circuit atop the Palmer Divide in Palmer Lake, Colorado at 7,240 feet. Top overall finishers receive awards and early 100 mile finishers receive buckles; part of fees supports local parks.

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 scenic half marathon from Fanny Hill in Snowmass along the Government Trail through Aspen groves to Koch Lumber Park in downtown Aspen. Registration opens April 28, 2026; in store $80, online $105.

A point to point trail race from Vail to Minturn with 26K and 14K courses across Vail Mountain. Both routes feature alpine singletrack, scenic views of Mt. Holy Cross, staffed aid stations and a post race lunch voucher.

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..

OUTLAST Colorado Springs is a 6 hour trail challenge with a 5K lap every hour for six rounds. Patches and a medal are awarded for laps completed and finishers are ranked on a national leaderboard with cash prizes for top times.

A high alpine 50k near Mount Princeton in Nathrop, Colorado, featuring 7,000 ft of climbing and a 13,100 ft high point. The course follows Chalk Creek Canyon and the Colorado Trail through ponderosa and aspen forests to an alpine plateau.

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.