Trail Running calendar near Granby 2025-2026

The Red Feather Trail Jamboree is a three-day trail running event scheduled for September 26-28, 2025, in the scenic Red Feather Lakes region of Northern Colorado. Organized by trail runners for trail runners, the event features multiple race distances, including a 50-mile, 50K, and half marathon, a..

The Golden Leaf Half Marathon is a scenic running event that takes place annually in Aspen, Colorado. The race begins at Fanny Hill in Snowmass and follows the picturesque Government Trail, winding through beautiful aspen groves before finishing at Koch Park in downtown Aspen. This popular half mara..

The Bear Chase Race is an exciting endurance festival held at Bear Creek Lake Park in Lakewood, Colorado, featuring a variety of race distances including 100K, 50 Mile, 50K, Half Marathon, 10K, and 5K. Scheduled for September 27-28, 2025, this event is ideal for both novice and experienced trail run..

The Emerald Mountain Trail Run is a scenic running event taking place in Steamboat Springs, Colorado, featuring two race distances: a 12k (approximately 7.75 miles) and a 4-mile run. The course begins at the base of Howelsen Hill and winds through beautiful aspen-lined single tracks, making it a pic..

Rocky's Backyard Ultra is an exciting ultra trail running event held in Estes Park, Colorado, at the YMCA of the Rockies. This unique race format requires participants to complete a 4.167-mile loop every hour until only one runner remains. The course features stunning Rocky Mountain scenery, with ap..

The Castle Rock Trail Festival is an exciting athletic event that caters to a wide range of participants, from ultra-distance runners to families with children aged 5 to 12. Set against the stunning backdrop of Philip S. Miller Park and Ridgeline Open Space, the festival features various race option..

The Great Trailhead Foot Race features both a 10-mile and a 5-mile race set in Bear Creek Lake Park, Lakewood, CO. Participants can enjoy scenic trails while racing, with amenities including free food and beverages post-race, such as hot dogs and non-alcoholic beer. Each runner receives a gender-spe..

The Blue Sky Trail Marathon and Half Marathon will take place on October 18-19, 2025, in Fort Collins, Colorado. This event features a marathon distance of 26.7 miles with an elevation gain of 3,500 feet, and a half marathon distance of 13.4 miles with an elevation gain of 1,800 feet. The courses tr..

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 multiple race distances including 50-Mile, 55k, 15-Mile, and 5-Mile courses. Participants will navigate through the scenic tr..

The Colorado 24 Hour Run is an exciting endurance event taking place in Fort Collins, Colorado. Participants can choose from various race formats, including 24-hour, 12-hour, and 6-hour runs, as well as relay options for each duration. The event is designed to accommodate runners of all levels, prov..

The HRCA Backcountry Wilderness Half Marathon is an annual trail race held in Highlands Ranch, Colorado, featuring a challenging 13.1-mile course through scenic landscapes. Participants will navigate dirt, gravel, and singletrack paths, with opportunities to encounter local wildlife and enjoy stunni..

The Louisville Trail Race, celebrating its 12th year, features a Half Marathon, 10K, and 5K, set against the stunning backdrop of Louisville, Colorado. Known for its scenic trails and welcoming atmosphere, the race offers a mostly flat course with a challenging hill that rewards runners with breatht..

The Sawmill Trail Runs, part of the Human Potential Running Series, is an annual trail running event held at Staunton State Park in Pine, Colorado. The event features three distance options: a 50k, a 16-mile, and an 8-mile race, catering to various skill levels. Known for its scenic and challenging..