Trail Running calendar near Vail 2026-2027

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 offers distances from 5K to 50K on high-elevation dirt trails with notable climbs, multiple aid stations, and specific time limits for longer courses.

Mountain trail races in Empire, Colorado offering 50K and 22K point to point courses with high altitude and substantial elevation gain. Prior ultra experience is required for the 50K and cut off times are enforced.

Experience a scenic trail run through sage brush and ponderosa pines in the Rocky Mountains. Choose between a half marathon or 10k distance with stunning views of the Collegiate Peaks in Buena Vista.

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.

Second annual trail race in Golden, Colorado on September 19, 2026 supporting BeyondHome. Courses include a 10 mile North Table Loop route and a 5 mile route on Lithic and Fairmount Canal trails.

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..

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.

Experience a rugged trail adventure through the Colorado wilderness in Estes Park. Choose between a 50k run or bike and a heavy half marathon while supporting the local high school mountain bike team.

A scenic half marathon presented by ACG that runs from Fanny Hill in Snowmass along the Government Trail through Aspen groves to Koch Lumber Park, held each late September with registration opening in April.

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 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.

Annual mountain trail events including 25K and 50K Fall runs with a Fishslapping division, plus the Colorado RUFA at Staunton State Park, scholarships, programs, and grants supporting access to the outdoors.

A two day trail festival at Bear Creek Lake Park in Lakewood, CO on October 3-4, 2026 offering races from 5K to 100K on mostly dirt singletrack with aid stations, drop bags at the Start/Finish, and specific crew and pacer rules.

Experience the scenic HRCA Backcountry Wilderness Area with trail races for the whole family. Enjoy rolling hills and open views followed by a pancake breakfast and finisher medals for all participants in Littleton.

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.