Trail Running Calendar United States 2025-2026

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 Kinni is an adventurous trail race held at Kinnickinnic State Park in River Falls, Wisconsin. Participants navigate using a map to find four hidden books across varied terrains, including rugged trails and scenic landscapes. The race covers approximately 10-13 miles, emphasizing strategy, endura..

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 DHRT 50K is an exciting trail running event set in King George, Virginia, taking place on August 2, 2025. This challenging race traverses the scenic Dahlgren Railroad Heritage Trail, offering participants a flat and well-maintained course primarily shaded by trees. Runners will face the added ch..

The Indian Trails 5K is a running and walking event scheduled for August 2, 2025, in Milan, Indiana. This event features multiple categories, including a 5K run and walk, with options for participants to receive a t-shirt or not. It serves as a fundraiser for the Milan cross country team and is part..

The Trail of the Dragon 50K/50 Mile Run is an exciting endurance event taking place at Moorehead Park in Ida Grove, Iowa. Participants can choose between a 50K, consisting of three 10-mile loops, or a 50-mile option, which includes five loops. The course features scenic trails with challenging hills..

The 26th Annual Trojan Trek is a running event held in Morristown, Tennessee, at Panther Creek State Park, a scenic 1,444-acre park on the Cherokee Reservoir. The race features a certified 5K course starting at the lower soccer fields, with ample parking near the pool and playground area. Panther Cr..

The Riley Park Trail Races is a family-friendly event held at Thomas F. Riley Wilderness Park in Orange County. The race offers various distances, including a 30k, half marathon, 10-miler, 10k, Riley Park 6-hour, and 5k, catering to runners of all levels.Participants can enjoy scenic single and doub..

The Bob's Big Timber Backyard Ultra will take place in Glenmont on Saturday 2 August 2025.

The Swain Mountain Race is an exciting mountain and trail running event taking place in Swain, NY. Covering approximately 6.5 miles with nearly 2,500 feet of elevation gain, participants will face steep climbs and descents, making it a challenging yet rewarding experience. The race features two loop..

The 3H Trail Half Marathon in King George, Virginia, is a scenic, flat, and fast out-and-back race held entirely on the Dahlgren Railroad Heritage Trail, a converted railroad bed featuring dirt, gravel, grass, and pine needle surfaces. The course offers nearly 100% shade from surrounding trees, prov..

The Reggie Oeltjen Douglas Trail 11-Mile Race is an annual running event held on the scenic Douglas Trail, an asphalt rail-trail stretching from Northwest Rochester to Pine Island, Minnesota. Participants start in Douglas and run an 11-mile out-and-back course shaded by a canopy of trees, offering a..

The Rodeo Valley Trail Run, held in the scenic Marin Headlands near Sausalito, CA, offers trail races of 8K, Half Marathon, 30K, and 50K distances. Starting near historic Fort Cronkhite and Rodeo Beach, the course features challenging steep climbs and descents along coastal trails with stunning view..

The Gremlin Gallop 5k is an annual scenic race held along the Armstrong Rails to Trails in East Brady, PA. Celebrating its 10th edition, the event offers a beautiful course suitable for runners of all levels, from beginners to seasoned athletes. Participants can enjoy the natural surroundings while..

The Emerald Mountain Epic will take place in Steamboat Springs from Saturday 2 August 2025 to Sunday 3 August 2025. You can run between 13 and 26 miles.

Night Claw is a unique nighttime trail running event held at Dinosaur Valley State Park in Glen Rose, Texas. Participants can choose from various distances including 5K, 10K, and timed 4-hour, 6-hour, and 8-hour races, all featuring scenic, hilly single-track trails with dirt, rocks, and a river cro..

The Run for Raptors Trail Race is an annual event taking place in Swope Park, Kansas City, on August 2, 2025. Participants can choose from a 5K Trail Walk, a 5K Trail Run, or a 10K Trail Run, catering to various skill levels. The race features scenic trails and educational opportunities, with staff..

The Farm Life 5k Trail Run is a fun and engaging event taking place at the Bonneville County Fair in Idaho Falls. Participants will enjoy a scenic course that winds through corrals, horse barns, and fields. The event features a 5k Fun Run and a free Grit League Obstacle Course for kids.All finishers..

The Green Valley Lake Half Marathon, along with 5K and 10K events, is scheduled for August 2, 2025, in the scenic San Bernardino Mountains. Participants will enjoy a picturesque course that begins with a flat loop around the lake, followed by a gradual ascent with a 400-foot elevation gain, offering..

The Blazin' Summer Sufferfest is a challenging night trail running event held at Cedar Hill State Park in Texas, featuring distances of approximately 5K, 10K, 18K, 36K, and 54K. The race takes place on the 12-mile DORBA trail system, winding through over 1,000 acres of forest and grasslands near Joe..