Trail Running Calendar Colorado 2026-2027

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.

Join the historic Barr Trail Mountain Race in Manitou Springs and test your legs on a scenic 12.6 mile out and back up Pikes Peak's Barr Trail. Classic summer mountain running with community support and stunning alpine views.

The TransRockies Run is a three-day stage race through the Colorado Rockies, from Hope Pass to Red Cliff. Choose between the 51-mile Full Pint or the 35-mile Half Pint. Runners finish each day at a fully supported camp with meals, showers,..

The Kendall Mountain Run climbs from downtown Silverton to a 13,066 foot summit in the San Juans. Choose between the 12 Miler or 11K distance on this cupless, scenic course. A combo discount is available for those tackling a Silverton Alpin..

Event Details The Never Summer 100km & 60km is a mountain trail running event scheduled for July 24-26, 2026. It is organized by Gnar Runners. The races start and finish at the Gould Community Center in Gould, Colorado. The event takes..

The Pikes Peak Ultra on July 25, 2026, features trail races from 20K to 50 miles in Colorado Springs. Starting at Bear Creek Park, the course includes views of Pikes Peak and a summit of Mt. Rosa for longer distances. Organized by Mad Moose..

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.

Grand Mesa Ultras This trail running event takes place on the Grand Mesa in Colorado, described as the world's largest flat-topped mountain, with an average elevation over 10,000 feet. The event offers three race distances: 50 Miler, 55K, a..

The Box Canyon Trail Races showcase the high alpine scenery of Telluride, Colorado. Runners can choose between a rugged 30K loop or a stunning 10 mile course, both featuring significant elevation gain. The event finishes in the historic tow..

Course and Terrain The Summit 200 is a 200-mile single-loop ultramarathon in Summit County, Colorado. The non-repetitive course utilizes hiking trails, 4WD roads, and recreation paths, with the majority being single-track trail and infreque..

Experience an epic 200 mile point to point team relay from Fort Collins to Steamboat Springs. Run through the heart of the Rocky Mountains and over two scenic mountain passes in this ultimate Colorado road race.

Experience high altitude trail running at an average elevation of 10,600 feet in Fairplay, Colorado. Choose between a technical ultra marathon or a flowing half marathon through the scenic South Park Valley.

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.

The Aspen Backcountry Maratons return on August 1, 2026 with three distances: 50K, marathon, and "heavy half" marathon. Participation requires a CORSAR search and rescue card, available online. This event is held alongside the Rotary Club A..

Explore high-alpine trails in Winter Park, Colorado. This event offers a scenic 50K point-to-point route from the resort into town, plus 21K and 10K options. It finishes in a vibrant park with community festivities.

The Buena Vista Pack Burro Race offers a unique running experience in Colorado. Participants can choose a long or short course, racing either with or without a burro. The event includes finisher gifts, a meal, and awards for top finishers.

The Lory Summer Trail Series offers four Tuesday evening trail races in August, from a flat 5k to a hilly 10k. Run in Lory State Park, each event features chip timing, series points, and a post-race gathering. Every runner gets a vintage ra..

The High Five 100 is a rugged, self-navigated 100-mile challenge near Lake City, CO. Runners must reach 24 checkpoints, summit 11 high peaks, and finish within 48 hours. There is no fee, no course markings, and no aid stations.

Event Overview Run the Rockies Trail Race is a trail running event held in Frisco, Colorado. The event offers three distances: a 5 km, a 10 km, and a half marathon. All races start and finish at the Frisco Nordic Center on Recreation Way. C..

Event Overview The Emerald Mountain Epic is a two-day trail race held in Steamboat Springs. It features mountain biking on August 8 and trail running on August 9. The event is a fundraiser for two local nonprofits: Routt County Riders and P..