Trail Running calendar near Castle Rock 2026-2027

A trail running event in Buena Vista, Colorado offering 50k and 30k courses on high elevation singletrack and forest roads with views of the Collegiate Peaks. The event is organized by Freestone Endurance and hosted alongside 14er Fest.

A 24-hour loop endurance run on a 0.82 mile course atop the Palmer Divide at 7,240 feet. Prizes are awarded by distance and the first ten runners to reach 100 miles receive a buckle; a portion of registration fees supports local parks.

The Estes Epic will take place in Estes Park from Saturday 26 September 2026 to Sunday 27 September 2026. You can run between 21 and 50 kilometers.

A high-alpine 50k near Nathrop, Colorado that climbs to 13,150 feet and covers about 33 miles with roughly 7,000 feet of ascent. The route features long singletrack sections, three aid stations, camping options, and an 11 hour cutoff.

The Bear Chase Trail Race is a two-day endurance festival in Colorado's Bear Creek Lake Park. On Saturday, runners can tackle ultra distances from 50K to 100K, while Sunday features shorter races like a half marathon, 10K, and 5K. The cours..

Run Wildcat Mountain near Littleton with 10 mile, 10K and kids races on rolling dirt trails and wide mountain views. Finishers get a dry fit shirt, medal, pancake breakfast and post race beers.

Mountain trail event near Pikes Peak offering 50K and 10K courses around Rampart Reservoir with multiple aid stations, crew access for the 50K, packet pickup, and on course food options.

On October 3, 2026 runners can choose a 5K road race, an 8 mile trail, or a 13.1 mile trail half marathon near the Royal Gorge Bridge. The weekend also includes a free kids Dinosaur Dash and a virtual race option.

A four-race fall cross country series across Colorado Springs parks with trail distances from 3.8 to 7.4 miles, chip timing, and series awards given after completion of all four races.

A multi-distance trail event at Indian Creek Campground near Sedalia, Colorado, featuring single-track routes through montane forests, aspens and red rock views, with 5-Mile, 15-Mile, 55k and 50-Mile options and limited entry.

A trail race series in Palmer Park, Colorado Springs offering 50K, 25K, 10K and 5K courses across rocky single track with city and Pikes Peak views. Mandatory reusable cup and offline GPX recommended; crews allowed at start and finish.

A trail race at Bear Creek Lake Park in Lakewood offering a 5-mile option and a 10-mile double lap, with park admission, post-run food and drinks included, free beer for those 21+ with ID, and a finisher mug for 10-mile finishers.

A four-race fall cross country series across Colorado Springs parks with trail distances from 3.8 to 7.4 miles, chip timing, and series awards given after completion of all four races.

Trail races at Bear Creek Lake Park offering 5 km, 15 km, a 5 km plus 15 km double, and a Kids 1 km. Main race registration includes socks or a neck gaiter and a pancake breakfast while kids receive a stuffy at the finish.

A late season trail event in Cañon City that offers 10K, 35K, 50K and a 35 mile single loop along the Arkansas River and through Royal Gorge Mountain Park with a summit at 7,109 feet and varied aid station support.

A four-race fall cross country series across Colorado Springs parks with trail distances from 3.8 to 7.4 miles, chip timing, and series awards given after completion of all four races.

A single-loop 13.1-mile trail half marathon in the Highlands Ranch Backcountry Wilderness near Lone Tree, CO, featuring dirt and singletrack terrain, four aid stations, finisher rewards, post-race food and beverages, and cash prizes for top..

Trail races in Louisville, Colorado on November 14, 2026 offering Half Marathon, 10K and 5K on dirt trails with front range views, aid stations, a cupless initiative, and limited onsite parking.

A four-race fall cross country series across Colorado Springs parks with trail distances from 3.8 to 7.4 miles, chip timing, and series awards given after completion of all four races.

The Colorado Cold Rush Ultra will take place in Colorado Springs on Saturday 21 November 2026. You can run between 10 and 50 kilometers.