Trail Running calendar near Golden 2025-2026

The Rattler Trail Race, taking place in Colorado Springs, features three race distances: 50K, 25K, and 10K. Set in the scenic Palmer Park, participants will experience breathtaking views of the city and Pikes Peak while navigating technical trails with unique rock formations. The course is designed..

The Can't Be Mad Running Festival, taking place in Erie, CO, offers a variety of running events including a 10K, 5K, a 3-hour timed event, and a Kid's 1K, with both in-person and virtual options available. The course features a flat and fast off-road cross-country style route with scenic views of th..

The Rock Hawk Trail Races, taking place in Castle Rock, CO, feature a variety of distances including 50K, 25K, 10K, and 5K. Set against the scenic backdrop of Miller Park and Ridgeline Trail systems, the event offers thrilling yet manageable trails suitable for both novice and experienced runners. P..

The Great Western Trail Race, taking place in Severance, Colorado, features a variety of running events including a 5K, 10K, half marathon, and a Kids Fun Run. This event celebrates Northern Colorado's newest trail, connecting Windsor, Severance, and Eaton. Participants can enjoy a festive atmospher..

The Cheyenne Mountain Trail Race, taking place in Colorado Springs, features a variety of distances including 50K, 25K, 7 Miler, and 4 Miler. Set against the stunning backdrop of Cheyenne Mountain State Park, participants will navigate scenic trails that include grassy meadows and wooded areas. The..

Take 5 in the Garden is an exciting running event held in the picturesque Garden of the Gods in Colorado Springs, CO. Participants can choose between a road race or a trail race, with options including a 5K, 5 Miler, and a 9.5-mile course. The event features closed roads, allowing runners to enjoy t..

The Greenland Trail Races, set in southern Douglas County, Colorado, features a variety of running events including a 50K ultramarathon, 25K, 8M, and 4M races. Participants can enjoy scenic trails with Pikes Peak as a backdrop, aiming for personal bests on soft dirt paths. The event includes chip ti..

The Falcon 50 is an annual race series held on May 3, 2025, at the USAF Academy in Colorado Springs, featuring five race options: 50 Miler, Marathon, Military Heavy, Half Marathon, and Military Half-Heavy. Established in 2011, the event showcases scenic and challenging terrain, primarily on dirt tra..

Niwot's Challenge is a demanding ultramarathon held in Colorado's Front Range, inspired by the Barkley Marathons. This grassroots event, limited to 40 participants, emphasizes navigation skills as runners traverse mostly off-trail terrain using only a map and compass. The challenge includes various..

The Mountain Ridge Trail Race, taking place on May 10, 2025, in Highlands Ranch, Colorado, offers a variety of distances for trail running enthusiasts, including a 21-mile, half marathon, 10K, and 5K. Celebrating its 11th year, the race features scenic dirt and single-track trails with manageable el..

The Quad Rock 50 and 25 Mile Trail Races, organized by Gnar Runners, will take place on May 10, 2025, in Lory State Park and Horsetooth Mountain Park, near Fort Collins, Colorado. This challenging event features a scenic course with significant elevation gains—over 5,500 feet for the 25-mile race an..

The Valkyrie Trail Race is a women's-focused running event held in Cheyenne Mountain State Park, Colorado Springs. Scheduled for May 10, 2025, it offers various distances, including 4 miles, 8 miles, 30K, marathon, and 50K. Participants will enjoy a scenic course that begins on crushed limestone and..

Samson's Revenge is an exciting running event taking place at the YMCA of the Rockies in Estes Park, CO, featuring three race distances: 55k, 27k, and 10k. The course offers a mix of fast single track trails and a challenging ascent to Bible Point, where participants can compete for the King of the..

The Ram Party Trail Runs, scheduled for May 17, 2025, in Colorado Springs, CO, offers a variety of race distances including 55 Mile, 60K, 50K, 24K, and 15K. Set against the stunning backdrop of Rampart Reservoir and Pikes Peak, this event promises an unforgettable trail running experience. Participa..

The Endure Trail Runs, organized by the Human Potential Running Series, takes place at Mueller State Park in Divide, Colorado. 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 and 24-Hour events will d..

The Weld Your Mettle Running Festival is a four-day event taking place in Eaton, Colorado, from May 23 to May 26, 2025. It offers a variety of running challenges suitable for all levels, including a 7K run, ruck, and timed events ranging from 3 to 48 hours, either solo or as part of a relay team. Pa..

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

The 3rd Latino Ultra Nature Adventure (LUNA) is a unique trail running event scheduled for May 31, 2025, in Boulder, Colorado. This culturally relevant and inclusive event features various distances, including 5km, 7 miles, 15 miles, and a marathon. LUNA aims to promote physical and mental health th..

The Reuter-Hess Trail Incline is a unique running event held in Parker, Colorado, featuring a challenging 10k course and a 1-mile kids' race. The race employs a handicap start system, allowing participants of varying ages and genders to compete on an equal footing. The course includes a steep inclin..

The North Fork 50 Mile/50K is an ultramarathon set in the scenic Colorado mountains near Denver, taking place on May 31, 2025. This event features a challenging course that is entirely on soft surfaces, primarily singletrack trails, with some double track sections. Runners will experience diverse la..