Trail Running calendar near Denver 2025-2026

Explore Palmer Park's rocky single track and sweeping city and mountain views at the Bobcat Trail Races in Colorado Springs. Choose from 50K, 25K, 10K or 5K and test your trail legs on technical, scenic routes.

Run scenic single track trails near the Denver skyline at the Great Trailhead Foot Race in Bear Creek Lake Park on October 18, 2025. Choose 5 or 10 miles, get a tech tee and post run party, and 10 mile finishers earn a mug.

Indian Creek Trail Runs in Sedalia Colorado on October 18 2025 features scenic single track through pine and red rock with distances from 5 mile to 50 mile. Choose 5 mile, 15 mile, 55k or 50 mile and earn a unique finisher award.

Run the Blue Sky Trail Marathon or Half in Horsetooth Mountain Park, Fort Collins on October 18 and 19, 2025. Enjoy rugged singletrack, sweeping Colorado views and well stocked aid stations in a limited field for a truly authentic trail exp..

Tackle scenic dirt trails at Bear Creek Lake Park with 5 km, 15 km, a 5 plus 15 double, or a kids 1 km. Registration includes socks or a neck gaiter and a pancake breakfast while kids earn a stuffed bear at the finish.

The Colleen De Reuck XC Classic is a cross country running event held annually at Harlow Platts Community Park in Boulder, Colorado. Honoring renowned distance runner Colleen De Reuck, the race promotes health, fitness, and celebrates local..

Run against the clock on a fully supported one mile dirt loop in Fort Collins, Colorado, choosing 6, 12, or 24 hour solo or relay formats. Enjoy an overnight challenge chasing distances from a marathon to an ultra in a friendly setting.

Event The Kokopelli XC Invitational takes place on November 8, 2025 at the El Pomar Youth Sports Complex, 2212 Executive Circle, Colorado Springs, CO. The 2025 event adds a USATF Open/Masters division as part of the Colorado Long Distance G..

Join the 17th Backcountry Wilderness Half Marathon, a single loop 13.1 miles trail in Highlands Ranch with mountain views and wildlife. November trails can be muddy or snowy; finishers receive a tech shirt, medal, pancakes and post race bee..

BINGO! Trail Party at May Farms in Byers on Nov 8, 2025 mixes looped trail running with a bingo twist where runners draw chips each loop to earn a finish before the 9:00 PM cutoff. Farm trails, one aid station and on site camping.

Located in Colorado Springs’ North Cheyenne Cañon Park, the Canya Cañon Trail Race & Family Hike offers a 4-mile trail race along the Columbine Trail, starting at the Starsmore Visitor & Nature Center (2120 S Cheyenne Canyon Rd). The course..

Run the Louisville Trail Race on November 15, 2025, amid the Flat Irons with 13.1, 10K or 5K dirt courses on scenic trails. Enjoy post race festivities and bring a reusable cup or purchase one onsite.

Event overview The Colorado Cold Rush Ultra takes place on November 22, 2025, in Colorado Springs, CO, with the start/finish at Bear Creek Regional Park West. Offered distances include: 50k Half Marathon 10k Registration closes on Novembe..

Take on the Thumbs Up Vertical Challenge in Estes Park CO on December 6, 2025, a small field test of grit with steep single track laps and sweeping views of Longs Peak and Mount Meeker. With only 30 spots, this intimate winter climb rewards..

Experience winter trails at Staunton State Park on December 6, 2025 with the Sawmill Trail Runs offering 50k, 16 mile, and 8 mile options through high meadows and granite cliffs. Enjoy well stocked aid stations, unique finisher awards, and..

USCSA Cross Country Ski Racing Festival, hosted by Colorado Mesa University at Snow Mountain Ranch Nordic Center in Granby, Colorado, on January 24–25, 2026, brings collegiate teams together with junior skiers for a two-day Nordic festival...

The Sourdough Snowshoe Race will take place in Nederland on Saturday 31 January 2026. You can run between 18 and 30 kilometers.

Event overview The Stories Trail Runs take place February 21-22, 2026 at Cheyenne Mountain State Park in Colorado Springs, CO. The combined runner capacity is 225. The event includes timed ultras and traditional distance races, with staging..

Race The Ranch invites snowshoers to YMCA Snow Mountain Ranch in Granby Colorado on April 4 2026 for multiple distances on scenic trails and lesser known loops. Expect challenging climbs, friendly aid stations and great finisher swag.

Run the Ranch is an annual trail running event held at the scenic Sylvan Dale Guest Ranch in Loveland, Colorado. The race offers a variety of distances including 5K, 10K, and timed trail runs of 4, 6, and 12 hours, with options for solo run..