Trail Running calendar near Larkspur 2025-2026

The Suffer Better Fall Trail Run is an annual mountain endurance event held at Staunton State Park, Colorado. The 9th edition, scheduled for October 11, 2025, features multiple race distances including a challenging 50K, a 25K with a unique Fishslappers division involving fish catching, and a new 5K..

The Bobcat Trail Race, held in Palmer Park, Colorado Springs, is a celebrated urban trail running event showcasing the park’s rugged beauty and panoramic views of the city and Pikes Peak. Organized by Aravaipa Running since 2024, it offers four distances: 50K, 25K, 10K, and 5K, catering to a range o..

The Indian Creek Trail Runs, part of the Human Potential Running Series, is an annual fall trail running event held at Indian Creek Campground in Sedalia, Colorado. Celebrating its 12th year in 2025, the race offers multiple distances: 5-Mile, 15-Mile, 55k, and 50-Mile, with time limits of 12 to 14..

The Great Trailhead Foot Race 10 Miler takes place at Bear Creek Lake Park in Lakewood, Colorado, offering runners a scenic trail experience with single-track dirt paths against the backdrop of Denver's skyline. Participants can choose between a 5-mile or a challenging 10-mile double-lap course. Reg..

Beware The Bear Trail Races take place at Bear Creek Lake Park in Lakewood, Colorado, offering 5km, 15km, and a combined 5+15km double race, along with a 1km kids' run. The courses feature mostly dirt trails with a mix of single and double tracks, incorporating short steep hills, rollers, and varied..

The Bridge Burner Ultra is a scenic trail running event held in Canon City, Colorado, featuring distances of 35 miles, 50K, 35K, and 10K. The race follows a single loop starting along the Arkansas River, passing through historic granite tunnels on Tunnel Drive, and ascending to 7,109 feet with stunn..

The Bingo! Trail Party is an annual trail running event held at May Farms in Byers, Colorado, organized by the Human Potential Running Series. It offers five distance levels ranging from 6 to 62 miles, accommodating beginners to ultra runners. The unique format involves runners completing loops and..

The HRCA Backcountry Wilderness Half Marathon is an annual 13.1-mile trail race held in Highlands Ranch, Colorado, featuring a scenic single-loop course through the Douglas County East/West trail and the Backcountry Wilderness Area. The race offers a challenging route on dirt, gravel, and singletrac..

The Canya Cañon Trail Race and Family Hike is an annual event held in North Cheyenne Cañon Park, Colorado Springs, starting at the Starsmore Visitor and Nature Center. The race features the original 4-mile course ascending the Columbine Trail to the Powell lot, welcoming runners and hikers of all ag..

The Louisville Trail Race, held annually in Louisville, Colorado, features a Half Marathon, 10K, and 5K, attracting runners to the scenic front range trails. Celebrating its 12th year, the event offers mostly dirt trail courses with some bike path sections, showcasing the stunning Flat Irons and fro..

The Colorado Cold Rush Ultra, held in Colorado Springs at Bear Creek Regional Park, is a winter running event featuring 50K, half marathon, and 10K distances. The race offers a scenic and challenging course that includes historic High Drive and the tunnels of the Colorado gold rush, with elevation g..

The Sawmill Trail Runs is an annual trail running event held at Staunton State Park in Pine, Colorado, about 40 miles southwest of Denver. Established in 2013 and officially a race since 2017, it offers three distance options: 50k, 16-mile, and 8-mile runs. The course features scenic and challenging..

Stories Trail Runs is an annual winter trail running event held at Cheyenne Mountain State Park in Colorado Springs, Colorado, offering stunning views of Cheyenne Mountain and Pike’s Peak. The event features multiple race options including 30-hour, 15-hour, and 6-hour timed ultra runs, as well as sh..

The 21st Annual Run Through Time Trail Marathon and Half Marathon takes place in Salida, Colorado, featuring challenging courses on dirt and jeep roads as well as narrow, hilly single-track trails with stunning views of Salida and the Arkansas Valley. Elevations range from 7,000 to 9,000 feet. The e..

The Rattler Trail Race, held in Colorado Springs, Colorado, offers runners a chance to explore the scenic Palmer Park trails. The event features multiple distances: 50K, 25K, 10K, and 5K, catering to various skill levels. Participants experience panoramic city views and sights of Pikes Peak while na..

Take 5 in the Garden is a scenic running event held in Colorado Springs, CO, within the stunning Garden of the Gods park. The race offers multiple distances including a 5K, 5 Miler, 5 Mile Trail, and a longer 9.5-mile course called Double Take. The park is closed to traffic during the event, allowin..

Niwot's Challenge is a highly demanding ultramarathon held annually in Sedalia, Colorado, along the South Platte River in the Front Range. Modeled after the grueling Barkley Marathons, it features a mostly off-trail course requiring advanced navigation skills using map and compass, with no GPS allow..

The Greenland Trail Races, held annually in May at Greenland Open Space in Larkspur, Colorado, offer four race distances: 4 miles, 8 miles, 25K, and the 50K ultramarathon, known as Colorado's fastest 50K. The course features wide, smooth dirt trails through native grasslands, ponds, oak hills, and p..

The Valkyrie Trail Race, held in Cheyenne Mountain State Park near Colorado Springs, Colorado, is a women-focused trail running event offering distances from 4 miles up to 50 kilometers. The course begins on crushed limestone meadows before transitioning to singletrack trails ascending Cheyenne Moun..

Endure Trail Runs, part of the Human Potential Running Series, is held annually at Mueller State Park near Divide, Colorado. The event offers multiple distances including a unique 12-Hour timed run, marathon, half marathon, and 10k, all featuring scenic single and double-track trails with no pavemen..