Trail Running calendar near Beaver Creek 2025-2026

The Silverheels Trail Runs is an annual ultramarathon event held in Colorado's stunning Front Range, featuring distances from 10 miles to 100 miles. The race takes place at high elevations, with courses through alpine meadows, ghost towns, and mountain forests, offering spectacular views of Colorado..

The Grin & Bear It is Crested Butte’s oldest trail running event, featuring a 15 km out-and-back race and a new 25 km loop, both starting and ending at the Crested Butte Nordic Center. The event takes place in July and offers scenic routes through mountain trails with significant elevation changes,..

The Leadville Silver Rush 50M is a challenging 50-mile trail run held in Leadville, Colorado, featuring 7,503 feet of elevation gain and reaching altitudes up to 12,024 feet. The out-and-back course traverses historic mining roads on the east side of Leadville, offering stunning views of the Rocky M..

The High Lonesome 100 is a challenging 100-mile trail race set in the stunning Sawatch Range of the Colorado Rocky Mountains. Participants will experience a grueling course featuring 23,500 feet of vertical gain, reaching elevations of 13,100 feet. The race includes a loop that traverses beautiful s..

The Audi Power of Four Trail Run is an exciting running event set in the scenic mountains of Aspen Snowmass. Participants can choose from three different race distances: a challenging 50K, a 25K, and a 10K run, catering to various skill levels. This event not only offers a chance to enjoy the beauti..

The Spring Creek Memorial Trail Run, held in Steamboat Springs, Colorado, is a scenic trail running event featuring two distances: a challenging 9.5-mile loop and a 5K out-and-back course. The 9.5-mile race includes rugged, primitive trails with significant elevation gain (~1,750 ft in the first 4 m..

The 10K & 5K @ 10,000 Feet is a challenging running event held in Vail, Colorado, as part of the Vail Trail Running Series. This race features two distance options—5 kilometers and 10 kilometers—both conducted at a high elevation of 10,000 feet, offering participants a unique mountain running experi..

The Never Summer 100K and 60K are challenging mountain ultramarathons held from July 25-27, 2025, within State Forest State Park in Colorado. The courses traverse rugged terrain, high alpine ridges, lakes, and peaks in the Never Summer and Medicine Bow Mountains, offering spectacular views and diver..

The Elevation Run/Walk is an annual event held in Conifer, Colorado, featuring race distances of 10 miles, 5 miles, and 2 miles. Set at an average elevation of 8,200 feet, the course showcases the scenic Aspen Park neighborhoods, combining paved roads, dirt roads, and trail running. The event suppor..

The Summit 200 is a challenging 200-mile mountain ultramarathon held in Summit County, Colorado. The race features a single 200-mile loop traversing stunning hiking trails, recreation paths, forest roads, and some pavement, with elevations ranging from over 9,000 feet to nearly 13,000 feet. Particip..

The Sheep Mountain Ultras, part of the Human Potential Running Series, is a challenging trail running event held annually in Fairplay, Colorado. The race offers three distances: a 50-mile ultra, a 50k, and a half marathon, all starting and finishing at the Town of Fairplay Beach. Set at an average e..

The Boulder Rez Marathon, held at Boulder Reservoir in Boulder, Colorado, offers a scenic and mostly flat course with only 200 feet of elevation gain. Runners enjoy trails and dirt roads alongside the reservoir, with stunning views of the water and the Rocky Mountains. The event features multiple di..

The Berry Picker Trail Run will take place in Vail on Saturday 2 August 2025.

The Emerald Mountain Epic is a premier two-day endurance mountain bike and trail running race held in Steamboat Springs, Colorado. Known for its challenging courses, the event features approximately 90% single-track trails with significant elevation gains, offering a true test of endurance and grit...

The Aspen Backcountry Marathon, held in Aspen, Colorado, offers three challenging trail running distances: a 50K, a marathon, and a heavy half-marathon. The courses run almost entirely on dirt trails featuring diverse terrain with significant ascents and descents, and elevation gains up to 5,512 fee..

The TransRockies Run is a six-day, 120-mile trail running event held in Colorado, offering participants an adventurous experience through stunning mountain landscapes. Known for building a strong community, the event attracts runners from around the world who seek challenging courses, camaraderie, a..

The Run the Rockies Trail Race is a scenic event featuring a 5k, 10k, and half marathon through the trails of Frisco Peninsula, offering stunning views of Dillon Reservoir and the Ten Mile Range. The courses include single track and dirt roads, starting and finishing at the Frisco Nordic Center. Par..

Dirt Circus - Boulder is a free community running event held in Boulder, Colorado, celebrating local trail running culture. Organized by UltraSignup, this one-day festival features a social group run with options of a casual 4.5-mile or 10K route, allowing runners to connect with the local running c..

Pyro's Push It Up Trail Run is a scenic trail running event held in New Castle, Colorado, set in the beautiful Flat Tops area. The race offers three distance options: a family-friendly 3.5K, a more challenging 7.7K, and a demanding 13K Double Down course. Participants run along mountain trails that..

The Leadville Trail 100 Mile Run, held annually in Leadville, Colorado, is a legendary ultramarathon known as the "Race Across the Sky." Established in 1983, this grueling 100-mile out-and-back course challenges runners with extreme Rocky Mountain terrain, starting at 10,200 feet and reaching a peak..