Trail Running calendar near Frisco 2024-2025

The Grand Traverse Mountain Run is a challenging 40-mile ultra marathon that takes place from Crested Butte to Aspen, Colorado. Following the route of the Grand Traverse Backcountry Ski race, participants face over 6,000 feet of elevation gain while traversing the scenic Elk Mountains. This event se..

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..

Run Rabbit Run is an exciting running event held in Steamboat Springs, Colorado, featuring both 50-mile and 100-mile races through the stunning Routt National Forest. Scheduled for September 12-13, 2025, the event attracts runners of all levels, with a unique format that includes "Hares" and "Tortoi..

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 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..

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 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 Crested Butte Ultra is a premier trail running event held in Crested Butte, Colorado, featuring three race distances: 50 miles, 55K, and 35K. Set against the stunning backdrop of Gunnison National Forest, participants can enjoy breathtaking views, vibrant wildflowers, and the beautiful autumn fo..

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 Great Trailhead Foot Race 10 Miler is an exciting running event held at Bear Creek Lake Park in Lakewood, Colorado. Participants can enjoy a scenic 10-mile course featuring single-track and dirt trails, all while taking in views of Denver's skyline. The event includes a post-race celebration wit..

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..

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..