Trail Running calendar near Glenwood Springs 2026-2027

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 races in Steamboat Springs with 50k, 16-mile, and 5-mile options starting and finishing at Torian Plum Lawn. The cupless event supports trail maintenance and features mountain aid stations, strict cutoffs, and no vehicle access on cou..

Experience a 40 mile point to point ultramarathon through the Elk Mountains from Crested Butte to Aspen. This high alpine challenge features 6000 feet of elevation gain and supports local recreational non-profit initiatives.

Experience a high altitude mountain run at Arapahoe Basin covering 9.4 miles and 2,211 feet of vertical gain. Runners summit Little Lenawee peak and finish with live music and professional photos at Mountain Goat Plaza.

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 trail race on Meadow Mountain in Minturn, Colorado featuring 11K and 5K routes across mountain meadows, historic sites, technical singletrack, aid stations offering water and Skratch hydration, and age group awards.

Discover the scenic Elk Mountains in Marble Colorado with trail races ranging from a 25 km loop to a kids fun run. Support a local charter school while enjoying peak fall colors and a post race barbecue meal.

Run Rabbit Run in Steamboat Springs, Colorado offers 50 mile and 100 mile mountain courses through Routt National Forest with roughly 9,000 ft and 22,000 ft of climbing and prize money for the 100 mile.

Mountain trail ultramarathons in Crested Butte, Colorado on September 26, 2026 offer 35K, 55K and 50 Mile courses across alpine meadows and ridges. Aid stations are cupless and the event starts and finishes at Crested Butte Community School..

This bucket-list half marathon runs from Snowmass to downtown Aspen on the scenic Government Trail. It sells out quickly, with registration opening each May for the late September race.

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..

A trail race at Hartman Rocks near Gunnison, Colorado offering 50K, 28K and 15K across slickrock, singletrack and rolling terrain with wide mountain views. The event includes participant swag and partners supporting youth and womxn trail pr..

A point-to-point trail marathon and 30K in Colorado’s North Fork Valley that climbs to Inter-Ocean Pass and finishes in Paonia; proceeds fund Nature Connection summer camp scholarships.

Trail races on Emerald Mountain near Howelsen Hill offering a 12k about 7.75 miles and a 4 mile option over aspen-lined singletrack. Awards and series prizes are presented at Olympian Hall after the race.

Two trail race options starting and finishing at Camp 4 Coffee in Crested Butte South, on marked single track and dirt roads through the Gunnison National Forest; the event is fully self-supported.

A Halloween-themed 5K run or walk in Aspen that benefits the local animal shelter. Bring your pet in costume for a chance to win prizes. The timed race offers cash prizes for top finishers and includes festive activities.