Trail Running calendar near Brighton 2024-2025

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 ..

Estes Park's Backyard Ultra is a unique ultra-running event set against the stunning backdrop of Lake Estes, Colorado. Participants must complete a distance of 4.252 miles within one hour, every hour, until only one runner remains. This format continues without a predetermined end, making it a true ..

The Timberview Trail Run is an exciting annual trail race held at Lory State Park in Colorado, featuring three distances: a 10-mile, a 5-mile, and a 5K. This event caters to athletes of all levels and ages, offering a scenic course with stunning views of Horsetooth Reservoir and the surrounding foot..

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 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..

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 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 Lory Summer Trail Series, scheduled for August 2025, features a series of midweek trail races at Lory State Park in Fort Collins, Colorado. Participants can choose from distances of 5K, 10K, and 12K, designed to cater to both novice and experienced trail runners. The event aims to create a fun a..

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 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 Front Range Ultra Dayze will take place in Loveland from Thursday 28 August 2025 to Monday 1 September 2025.

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..

The Snow Mountain Ranch Trail Running Festival, held at the YMCA of the Rockies in Granby, Colorado, offers a stunning celebration of trail running with multiple race options including a 50K, 33K, Half Marathon, 10K, and 5K. Participants can enjoy breathtaking views of rolling hills and vibrant fall..

The Red Feather Trail Jamboree is a three-day trail running event held in September 2025 at the Ben Delatour Scout Ranch in Red Feather Lakes, Colorado. Participants can choose from three race distances: 50 miles, 50K, and a half marathon, each featuring scenic trails with varying elevations and ter..

The Pikes Peak Ascent and Marathon, established in 1956, is renowned as America's ultimate challenge, featuring the oldest continually held marathon in the U.S. The marathon covers a grueling 26.2 miles from Manitou Springs to the summit of Pikes Peak, ascending approximately 7,800 vertical feet. Th..

The 24 Hours of Palmer Lake is an endurance running event set in the scenic mountains of Palmer Lake, Colorado, featuring a 0.82-mile loop course at an elevation of 7,240 feet. This community-driven race encourages participants to challenge their mental and physical limits, whether competing for dis..

The Bear Chase Race Endurance Festival, taking place at Bear Creek Lake Park in Lakewood, CO, features a variety of trail running events including a 100K, 50 Mile, 50K, Half Marathon, Baby Bear 10K, and 5K. This festival is ideal for both novice and experienced ultramarathoners, offering a mix of ch..

Rocky's Backyard Ultra is an exciting ultra trail running event held at the YMCA of the Rockies in Estes Park, Colorado. Participants must complete a 4.167-mile loop every hour until only one runner remains, who is declared the winner. The course features stunning Rocky Mountain scenery, with approx..

The Indian Creek Trail Runs, part of the Human Potential Running Series, is a celebrated annual event known as the "Fall Classic." Scheduled for October 18, 2025, it features four race distances: 50-Mile, 55k, 15-Mile, and 5-Mile, all set in the scenic landscapes of Sedalia, Colorado. Participants w..