Trail Running calendar near Frisco 2024-2025

The Lionshead Ruck will take place in Pine Junction Area on Saturday 9 November 2024.

The Reuter-Hess Trail Incline is a unique running event taking place in Parker, CO, featuring a challenging 10k course and a 1-mile kids race. The 10k course includes a lollipop loop with a mix of flat, rolling, and rocky terrain, culminating in a steep descent. A handicap starting system will be im..

The Mountain Peacock 50k is an inaugural ultra running event set in Golden, Colorado, designed for adventurers seeking a no-frills experience. Participants will tackle four peaks—South Table Mountain, North Table Mountain, Mount Galbraith, and Lookout Mountain—starting and ending at Parfet Park. Thi..

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 2024 edition will feature three race distances: 50k, 16-mile, and 8-mile, with a combined runner capacity of 200 participants. The event, which bega..

The Thumbs Up Vertical Challenge is an exciting running event held in Estes Park, CO, where participants tackle the Thumb Open Space out and back trail. Runners will ascend the trail, collecting poker chips at the turnaround to deposit at the start, with the total chips counted at the end to determi..

The Santa's Summit Slam will take place in Estes Park on Saturday 14 December 2024. You can run 5 miles.

The Winter's End Snowshoe Races will take place in Granby on Saturday 8 March 2025. You can run between 8 and 26 miles.

The 20th Annual Run Through Time Trail Marathon and Half Marathon will take place in Salida, Colorado, featuring a marathon, half marathon, and a 2-mile run. The event showcases scenic and challenging courses on dirt roads and narrow single tracks, with elevations ranging from 7,000 to 9,000 feet. P..

The Greenland Trail Races, held annually in May at the Greenland Open Space in Larkspur, Colorado, offers participants a choice of four distances: 4M, 8M, 25K, and the 50K, which is recognized as Colorado's fastest 50K. The event features a scenic course that traverses diverse landscapes, including ..

The Collegiate Peaks Trail Run, established in 1991, is a challenging running event held in Buena Vista, Colorado, featuring two distance options: 25 miles and 50 miles. The race begins and ends near the Arkansas River, primarily utilizing single-track and jeep trails that follow the historic Midlan..

Niwot's Challenge is a challenging ultramarathon held annually in Colorado's Front Range, designed for experienced runners. Modeled after the Barkley Marathons, this event features a secretive course that requires participants to navigate primarily off-trail using a map and compass. With a limited c..

Samson's Revenge is a trail running event held at the YMCA of the Rockies in Estes Park, Colorado, honoring the legacy of Samson, a famous elk poached in 1995. Participants can choose from three distances: 10K, 27K, and 55K, featuring a challenging course with a King of the Mountain segment. The eve..

The Endure Trail Runs, hosted by the Human Potential Running Series, takes place at Mueller State Park in Divide, Colorado, from May 17 to May 18, 2025. This unique event features a variety of races, including a 10k, Half Marathon, and timed challenges of 12 and 24 hours. Participants in the 12-Hour..

The Ol' College Try 24 Hour Ultra is Denver's inaugural 24-hour ultra race, taking place at Auraria Campus on May 24-25, 2025. Hosted by Rise Again Running Events in collaboration with Tall Tales Ranch, this event invites runners of all levels to challenge themselves in a non-stop race environment. ..

The Spirit Trail Race is an exciting running event held in Buena Vista, Colorado, during Memorial Day Weekend. Participants can choose from various race distances, including a marathon, half-marathon, and 9k. The race promotes community engagement by donating proceeds to local organizations such as ..

The Crazy Legs 10K+ Trail Run is an exciting running event taking place at Devil’s Backbone Open Space in Loveland, Colorado. This trail run features a challenging course marked by flour arrows, with hydration stations provided by volunteers. Participants can enjoy a unique experience, including the..

The Great Divide Ultra is a premier trail running festival held in Divide, Colorado, featuring a variety of race distances including 100 miles, 100K, 50K, and 25K events across the scenic landscapes of Mueller State Park. Known for its stunning views and smooth single/double-track trails, the event ..

Estes Park's Backyard Ultra is a unique ultra-running event set against the stunning backdrop of Lake Estes, Colorado. Participants must complete a 4.252-mile loop every hour until only one runner remains, who is declared the winner. The event supports Childcare and Family Services in Estes Park, ma..

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 Mo..

The Silverheels Trail Runs is an annual running event held in Como, Colorado, featuring a variety of distances including 100-mile, 100k, 60k, 50-mile, 18-mile, and 10-mile races. Set against the stunning backdrop of Colorado's Front Range, the courses traverse high alpine meadows, ghost towns, and o..