Trail Running calendar near Vail 2024-2025

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 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 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 ..

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..

The Leadville Silver Rush 50M will take place in Leadville on Saturday 12 July 2025. You can run 50 miles.

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 Summit 200 is an extraordinary 200-mile ultra-running event set in the breathtaking landscapes of Summit County, Colorado. This challenging race features a single-loop course that reaches altitudes between 9,000 and nearly 13,000 feet, with a total elevation gain of approximately 40,000 feet. Li..

The Sheep Mountain Trail Runs, organized by the Human Potential Running Series, offers a challenging and scenic experience for trail and ultra runners in Fairplay, Colorado. Set at an average elevation of over 10,600 feet, the event features three race distances: a Half Marathon, 50k, and 50-Mile. P..

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 offers participants a unique opportunity to experience breathtaking trails while fostering a strong sense of community a..

The Leadville Trail 100 Mile Run will take place in Leadville from Saturday 16 August 2025 to Sunday 17 August 2025. You can run 100 miles.

The CKF Leadville Trail 100 will take place in Leadville from Saturday 16 August 2025 to Sunday 17 August 2025. You can run 100 miles.