Trail Running calendar near Glenwood Springs 2026-2027

Run through wildflowers and Aspens along Spring Creek in Steamboat Springs. Choose between a challenging 9.5-mile loop with significant climbing or a rolling 5K out-and-back. This memorial event includes a post-race meal.

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.

Experience high altitude trail running at 10,000 feet on the scenic Vail Mountain in Colorado. Choose between a 5K or 10K course featuring mountain views, wildflowers, and a unique gondola ride to the starting line.

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..

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 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.

Experience high alpine trail running in the scenic mountains surrounding Aspen. Choose between 50K, marathon, or heavy half marathon distances on dirt trails ending at a vibrant finish line festival.

Experience a challenging 4.3 mile uphill climb on Vail Mountain featuring over 2,000 feet of elevation gain. This scenic singletrack race finishes at Mid Vail with stunning views and post run refreshments for all participants.

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..

The Leadville Trail 100 Run is a legendary 100-mile ultramarathon in the Colorado Rockies. With over 15,000 feet of elevation gain and a summit over 12,500 feet at Hope Pass, it's a massive high-altitude challenge. Finishers within 30 hours..

Experience the high-altitude scenery of Leadville on this 10K course, which follows the first and final miles of the famous LT100 Run. With a single aid station and awards for top finishers, it's a classic mountain run. Registration is open..

Experience high altitude trail running through the aspen groves and ski resorts of Arrowhead and Bachelor Gulch. Choose between a challenging half marathon with significant elevation gain or a scenic point to point downhill 5K.

Experience trail running on the Continental Divide in Steamboat Springs. Choose from 50k, 16 mile, or 5 mile courses in a cupless event supporting local trails. Awards, finisher mugs, and a post-race taco bar await participants.

This 40-mile point-to-point ultramarathon traverses the Elk Mountains from Crested Butte to Aspen, with over 6,000 feet of elevation gain. The event requires mandatory backcountry gear and supports Colorado Search and Rescue. Registration o..

A mountain trail race at Arapahoe Basin on September 5, 2026 covering *9.4 miles* and *2,211 ft* of ascent, with Sport, Expert and Pro divisions, a 700 runner cap, on course aid stations and category prizes.

This high-altitude trail run starts at 10,000 feet on Rabbit Ears Pass. The 10k course features 1,200 feet of climbing and descending on a mix of dirt roads and single-track. A shorter 5k option is also available.

Experience the historic landscapes of Meadow Mountain in Minturn with a technical trail race through alpine meadows and singletrack. Choose between 5K and 11K routes featuring beautiful views of the Gore Range.

Run through the fall colors of the Elk Mountains in Marble, Colorado. Choose from a scenic 25K, an 8-mile climb, or a kids 2.5K. All proceeds support the local charter school and registration includes a shirt, BBQ, and a finisher medal.

Run Rabbit Run is a September trail running event in the mountains near Steamboat Springs, Colorado. It features a 50-mile and a 100-mile course with significant elevation gain. The 100-mile race offers substantial prize money.