Trail Running calendar near Beaver Creek 2026-2027

Summit Grays and Torreys Peaks in this 8.8 mile Colorado endurance event. Participants must carry a 20lb dry load while tackling 4,101 feet of elevation gain.

A high altitude 100 mile out and back ultramarathon around Leadville Colorado, with over 15,000 feet of elevation gain and a high point at Hope Pass. Aid stations, drop bag locations, and pacers are part of the race structure.

A 6.2 mile out-and-back using the opening and closing miles of the LT100 Run course, the Leadville Trail 10K features paved and dirt roads at high elevation with one turnaround aid station and on-course nutrition from Neversecond and Skratc..

A 60 hour endurance challenge at Snow Mountain Ranch where runners repeat a 10 mile trail loop to reach milestone distances. Entry includes lodging, meals, training and recovery services.

Experience a high altitude trail run through the Rocky Mountains on 100 percent unpaved roads and trails. This dog friendly event in Fraser supports children facing cancer through the Shining Stars Foundation.

Experience high altitude trail running through the scenic singletrack and historic landmarks of Staunton State Park. Choose between a full or half marathon featuring sweeping mountain views and a festive post-race meal.

A mountain trail half marathon and a mostly downhill 5.6K in Arrowhead on August 22, 2026, featuring single-track terrain, a 9,560 ft summit, aid stations on the half, and age-group awards.

Trail half marathon in Evergreen, Colorado on August 22, 2026. The 11 mile course gains over 1,300 feet, tops out just under 9,000 feet, and runs through Elk Meadow and Too Long Trail from Buchanan Park Recreation Center.

A 5K trail race in Evergreen, Colorado on August 22, 2026, routed through lower Elk Meadow Park with course marshals. The event is cup-free, offers water refills at start and finish, and includes vendor tents and on-site food.

A mountain trail event in Steamboat Springs offering 50k, 16 mile and 5 mile courses with high-elevation climbs, cupless aid stations, and limited crewing at Rainbow Saddle. Proceeds support trail maintenance.

Run Like the Wind in Allenspark on August 29, 2026 features a 5K race, a 2K run/walk and a dog jog option. Proceeds benefit The Old Gallery and participating dogs are entered in an amateur dog show.

A point to point ultramarathon from Crested Butte to Aspen covering about 40 miles and over 6,000 feet of climb, held as a fundraiser for Crested Butte Nordic with mandatory safety gear and on course aid stations.

A 9.4 mile mountain race at Arapahoe Basin on September 5, 2026, with 2,211 feet of ascent across summer roads, established singletrack and new high alpine trails. The field is capped at 700 and the course uses White River National Forest t..

Join the community for a 5K run or walk on a brand new dirt course at the North Arvada Middle School Athletic Complex. Support local high school racers before taking on this off road route yourself.

Test your endurance at Staunton State Park with weighted rucking options ranging from 6.5 to 21.5 miles. Choose your load and tackle the Colorado trails to support the Special Forces Foundation.

Trail races at the 10,000 foot summit of Rabbit Ears Pass on September 6, 2026, with a roughly 6.8 mile 10k and a 3.4 mile 5k. Proceeds support Steamboat Nordic and awards and a raffle follow the finish.

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.

Trail running at Snow Mountain Ranch near Granby, Colorado, with 50K, 33K, half marathon, 10K and 5K on dirt trails through aspen groves and mountain views. Courses are high altitude with aid stations and a cupless race policy.

Point-to-point trail races in Empire, Colorado offering 50K and 22K courses at high altitude with 100% dirt singletrack and substantial climbing. Prior ultra experience is required for the 50K and registration closes Sep 8.

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.