Trail Running calendar near Wheat Ridge 2026-2027

A day of youth and adult cross country races in Aurora, Colorado on September 20, 2026, featuring grass courses with small undulations, a creek crossing, and bale jumps; distances run from 2k youth races up to a 5k open race.

The 18th Annual Be Ovary Aware 5K run and 3K walk in Colorado Springs benefits Sue's Gift to support people with gynecologic cancer. The flat course follows Fountain Creek and includes fundraising options and event-day activities.

Experience the wild spaces of Northern Colorado with a weekend of trail races ranging from a half marathon to a 50 mile ultra through scenic forests and scout camp trails. Stay on site with available camping and community meals.

Tough Mudder Colorado takes place at Fort Carson on September 26, 2026. Runners can choose a 15K with 20+ obstacles or a 5K with 12+ obstacles, with spectator and group options available.

A 24-hour endurance race on a 0.82 mile loop atop the Palmer Divide in Palmer Lake, CO. Top three awards and onsite buckles for the first 100-mile finishers; $5 from each registration supports local parks.

A two-day trail and bike event in Estes Park featuring 31-mile bike and run options, a 15-mile heavy half, and a 62-mile duathlon, with rugged trails, significant climbs, and aid stations supporting competitors.

A point to point trail race from Vail to Minturn with 26K and 14K courses across Vail Mountain. Both routes feature alpine singletrack, scenic views of Mt. Holy Cross, staffed aid stations and a post race lunch voucher.

A *5K* trail run on Town of Breckenridge Trails that finishes at Blue River Plaza on Main Street during Breckenridge Oktoberfest. Field limited to 300 runners; first 250 registrants receive a long-sleeve technical tee and 21+ entrants get a..

OUTLAST Colorado Springs is a 6 hour trail challenge with a 5K lap every hour for six rounds. Patches and a medal are awarded for laps completed and finishers are ranked on a national leaderboard with cash prizes for top times.

The 4th annual Greenland Open Space Pack Burro Race in Larkspur, Colorado offers 8 Mile and 3 Mile pack burro divisions. Teams must register a burro partner, follow animal welfare rules, and the field is limited to 75 participants.

A multi distance trail weekend at Bear Creek Lake Park in Lakewood Colorado offering 100K, 50 Mile, 50K, half marathon, 10K and 5K on mostly dirt singletrack with aid stations, drop bag support and on site medical.

Experience the scenic HRCA Backcountry Wilderness Area with trail races for the whole family. Enjoy rolling hills and open views followed by a pancake breakfast and finisher medals for all participants in Littleton.

A Woodland Park trail event featuring 50k and 10k options on singletrack and forest roads with views of Pikes Peak, stocked aid stations, and crew access for the 50k.

Multiple trail races and a family obstacle run take place on Castle Rock ridgeline trails, with timed 5K to 50K options, chip timing, finisher medals and proceeds from the liveBIG race supporting the town’s Therapeutic Recreation Program.

A six-hour trail challenge in Littleton where runners complete a 5K each hour for six hours, totaling 18 miles if completed. Trail terrain, hourly elimination, tiered patches and medals, and national leaderboard prizes highlight the format.

A four-race trail series across city parks with increasing distances, chip timing, and cumulative awards for runners who complete all four events.

Multiple trail distances at Staunton State Park on October 10, 2026, from a steep 5K to a 50K ultramarathon, plus a 25K FishSlappers division that includes catching a trout; proceeds support conservation organizations.

A loop endurance event near Castle Rock, Colorado honoring two women with long lives. Choose **104 miles** or **52 miles** on a 3.25-mile loop, with solo and relay options plus camping, food trucks, and live music.

Run the Rocks is a fundraising event at Red Rocks Park and Amphitheatre in Morrison, Colorado on October 11, 2026. It offers a 5k and a 1.3 mile family course and raises funds for lung disease education, advocacy and research.

Indian Creek Trail Runs in Sedalia, Colorado on October 17, 2026 offers multiple trail and ultra distances through montane forests, aspen groves, red rock formations and prairie vistas with city views from several viewpoints.