Trail Running Calendar Colorado 2026-2027

Join the Powderhorn Mountain Trail Climb in Grand Junction for scenic 5K and 15K trail runs that celebrate local runners and outdoor community spirit. Volunteer spots are available and full refunds or deferrals are offered if severe weather..

Two trail races in Steamboat Springs on July 18, 2026: a 9.5 mile loop with significant climbing and rocky single track, and a 5k out and back on rolling two track. One aid station on the longer course, cupless event, prize raffle and post..

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 mountain trail race in Manitou Springs, Colorado, covering 12.6 miles up and back on Barr Trail to Barr Camp. Scheduled for July 19 2026, it is part of the Garden to Peak Challenge and runs under a Pike National Forest permit.

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.

A mountain run in Silverton with two distances, a jeep road climb from 9,318 to 13,066 feet and a final summit scramble. The event is cupless, has aid stations on course, a six hour time limit, and a Mountain Duo option.

A high-altitude mountain ultramarathon in State Forest State Park offering 60 km, 100 km or the Double. The route crosses alpine ridges, peaks and lakes with limited cell service and fully stocked aid stations.

Trail races of 20K, 30K, 50K and 50 mile run from Bear Creek Regional Park in Colorado Springs on July 25, 2026, featuring crushed granite trails, sections with views of Pikes Peak, and summit options on the longest courses.

An ultra running event in Creede offering 50 mile and 100 mile courses across the San Isabel and Rio Grande National Forests over two days, organized by Tempest Adventures under a USDA Forest Service permit.

Trail races on Grand Mesa, Colorado, with 50 mile, 55K and 30K options across high elevation single track, alpine meadows, lakes and multiple camping choices.

High-alpine loop races in Telluride offering a 30 K with about 5,800 ft gain and a 10-mile with about 3,500 ft gain, featuring alpine meadows, canyon ascent and ski-resort singletrack with a high point near 13,000 ft.

A non repetitive 200 mile loop around Summit County Colorado that reaches high alpine elevations above 9000 feet. The field is limited to 75 runners, with live GPS tracking, aid and sleep stations, and a 110 hour cutoff.

Experience the Wild West Relay, a scenic point to point 200 mile run from Fort Collins to Steamboat Springs. Solo runners and teams of every size are welcome, with live GPS tracking and a mountain finish at Steamboat Springs Ski Resort.

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.

A 15 mile mountain trail race in Hesperus, Colorado, gaining about 3,100 feet and topping out near 12,200 feet at Kennebec Pass. This non profit event benefits La Plata County Search and Rescue and is limited to 150 runners.

A trail running event in Aspen on August 1, 2026 offering 50K, marathon and heavy half marathon distances on mostly dirt trails, with remote aid stations, high alpine terrain and a finish line festival alongside the Duck Derby.

Run a scenic mountain 50K or 10K from Winter Park Resort into town with flowing singletrack, aspen groves and views of the Continental Divide. Expect changing high altitude conditions, full aid stations and a finisher award.

Experience the Buena Vista Pack Burro Race in Colorado on August 2, 2026 with long and short courses and options to compete with or without a burro. Finishers enjoy a gift, pizza buffet, free photos and small town Triple Crown charm.

A four-evening trail race series at Lory State Park in August 2026 offering short courses from 5K to 12K, chip-timed series scoring and end-of-series awards. Vintage shirts, pizza and beverages are provided after each race.

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.