Trail Running calendar near Lyons 2026-2027

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.

A remembrance running event in Longmont, Colorado on September 11 and 12, 2026 featuring loop course races from 5K to 100 miles and a virtual option. The event includes aid stations, participant shirts, finisher awards, and on site food for..

The Ned Ned Run will take place in Nederland on Saturday 12 September 2026. You can run between 5 and 13 miles.

Snow Mountain Ranch in Granby Colorado features trail races from 5K to 50KM across dirt trails with varied elevation and mountain views. Loop courses include aid stations, drop bag access, onsite lodging, and a pacer option for the 50KM fin..

The Black Squirrel Half Marathon is a 13.5-mile trail race through Lory State Park near Fort Collins. Runners tackle a significant climb to a scenic ridge before descending on rolling singletrack. The event includes aid stations, a generous..

Devil on the Divide 50K and 22K This trail race takes place in Empire, Colorado. The course is 100% dirt, with the majority being single-track trail. It is a point-to-point route. Participants will reach a top altitude over 13,000 feet. The..

The Break of Dawn North Table Trail Race features 10-mile and 5-mile courses on the trails of North Table Mountain in Golden. The event supports BeyondHome's mission. Packet pickup is available in the days before the race.

The Red Feather Trail Jamboree is a three-day trail running festival in the Colorado mountains. Runners can choose from a 50-mile, 50K, or half marathon course exploring forests and meadows near Red Feather Lakes. The event features camping..

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 returns to Colorado's mountains with trail runs and a mountain bike race. Choose from a 50k run, a heavy half marathon, a 50k bike race, or the ultimate "Epic" double. The event supports the local high school mountain bike te..

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..

Explore the scenic HRCA Backcountry Wilderness Area on this autumn trail race near Wildcat Mountain. Choose between a 10-mile or 10K course on rolling dirt trails. The event includes a kids' race and features a pancake breakfast and post-ra..

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.

This October trail event near Fort Collins features a marathon and a half marathon on the scenic Blue Sky Trail. Run mostly on singletrack through the Front Range hogbacks, the races offer generous time cut-offs. A post-race meal, t-shirt,..

Run on scenic trails at Bear Creek Lake Park with views of Denver. Choose between a 5-mile loop or a two-lap 10-mile challenge. Your entry includes park admission, a t-shirt, and a finish line celebration with food and drinks.

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 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.

The Sawmill Trail Runs offer three scenic trail distances at Staunton State Park in Colorado. This popular event with limited capacity requires off-site parking and a shuttle. Participants should prepare for unpredictable December mountain..