Trail Running calendar near Divide 2024-2025

The North Fork 50 Mile/50K is an ultramarathon set in the scenic Colorado mountains near Denver, taking place on May 31, 2025. This event features a challenging course that is entirely on soft surfaces, primarily singletrack trails, with some double track sections. Runners will experience diverse la..

Mace’s Hideout 100 is a challenging and scenic ultra-running event set in the stunning Wet Mountains of Colorado. Participants can choose between a 100-mile or 50-mile distance, with only 75 spots available for each. The course offers a unique experience as runners traverse diverse ecosystems, from ..

The Great Divide Ultra is a premier trail running event held in Divide, Colorado, featuring a variety of race distances including 100 miles, 100K, 50K, and 25K, taking place on June 7-8, 2025. Set in the scenic Mueller State Park, participants will experience beautiful rolling meadows and stunning v..

The Barr Lake Trail Race, held in Brighton, Colorado, is a celebrated running event now in its sixth year, featuring a variety of distances including 50K, 30K, Half Marathon, 15K, and 5K. Known for its flat and fast course with minimal elevation gain, the race offers stunning views of Barr Lake and ..

The Leadville Trail Marathon and Heavy Half is a challenging running event set in the historic mining district of Leadville, Colorado. Participants can choose between a 26.4-mile marathon or a 15.4-mile Heavy Half, both featuring rugged trails and high-altitude terrain, with the marathon reaching an..

The Alma Foundation Race in the Clouds Dirt Festival is an exciting outdoor event taking place in Alma, Colorado, from July 10 to July 13, 2025. Set at an elevation of 10,600 feet, the festival features a variety of activities including mountain bike racing, trail running, a free kids' bike race, an..

The Silverheels Trail Runs, part of the Human Potential Running Series, will take place on July 11-12, 2025, in Como, Colorado. This annual event features multiple race distances, including a 100-Mile, 100k, 50-Mile, 60k, 19-Mile, and 10-Mile, catering to a variety of runners. The courses, set at an..

Chase the Moon is an exciting overnight running event held in the Highlands Ranch Backcountry trail system, featuring a 12-hour solo ultramarathon and team relays. Participants can choose to run solo or form teams of 3 or 5. New this year, shorter distances such as 5 miles, 10 miles, 25K, and 50K ar..

The Leadville Silver Rush 50M is a challenging 50-mile trail run set against the stunning backdrop of the Rocky Mountains. Participants will navigate a course featuring significant elevation gain, technical climbs, and breathtaking views, making it a true test of endurance and skill. The event serve..

The High Lonesome 100 is a challenging 100-mile trail race set in the stunning Sawatch Range of Colorado. With a total elevation gain of 23,500 feet and a high point of 13,150 feet, this race offers a rugged loop course that showcases some of the best singletrack in the state. Participants will trav..

The Pikes Peak Ultra is an exciting running event designed to highlight the stunning trails of Colorado Springs. Participants can choose from various distances, including 20K, 30K, 50K, and 50 miles, with the course starting at Bear Creek Regional Park. Runners will traverse scenic routes, including..

The Elevation Run/Walk is a community-focused event taking place in Conifer, Colorado, on July 26, 2025. This annual race features multiple distances, including 10 miles, 5 miles, and a 2-mile fun run, showcasing the scenic trails and neighborhoods of Conifer at an average elevation of 8,200 feet. P..

The Summit 200 is an extraordinary 200-mile mountain race set in Summit County, Colorado, featuring a challenging loop that showcases stunning hiking trails, forest roads, and scenic views. Participants will experience significant elevation changes, with the lowest point over 9,000 feet and sections..

The Sheep Mountain Ultras, part of the Human Potential Running Series, is an annual trail running event held in Fairplay, Colorado. Scheduled for August 2, 2025, it features three race distances: a challenging 50-mile, a 50k, and a half marathon, all set against the stunning backdrop of the South Pa..

The Boulder Rez Marathon is a scenic running event held at the Boulder Reservoir in Boulder, Colorado. Participants can choose from various distances, including a marathon, half marathon, 3/4 marathon, and 10K, all set along dirt roads and trails with stunning views of the reservoir and Rocky Mounta..

The TransRockies Run is an exhilarating six-day stage race set in the stunning Colorado Rockies, covering a total distance of 120 miles. Scheduled for August 4-9, 2025, this event promises an unforgettable adventure for participants, fostering a unique community spirit among runners. The race is des..

The Holy COW Trail Stampede is an exciting running event held in Westminster, Colorado, featuring a 10-mile race and a 5k/10k option. Participants can enjoy a fun and festive atmosphere while supporting the charity partner, Growing Home, which focuses on breaking the cycle of poverty for families in..

The Leadville Trail 100 Mile Run, known as the "Race Across the Sky," is a prestigious ultramarathon held annually in Leadville, Colorado. Established in 1983, this grueling event challenges participants with a 100-mile out-and-back course that features extreme elevation changes, including a peak at..

The Westminster Night Trail, celebrating its 12th year, is an exciting nighttime running event held at Standley Lake in Westminster, CO. Participants can choose from various distances, including 50K, 35K, Half Marathon, 10K, and 5K, all set against the stunning backdrop of Colorado's natural beauty...

The Cirque Series at Arapahoe Basin is a thrilling mountain running event scheduled for September 6, 2025. Participants will tackle a challenging 9.4-mile course with an elevation gain of 2,411 feet, starting from the base at 10,780 feet. The route features stunning views and diverse terrain, includ..