Trail Running Calendar United States 2025-2026

The Oakland Tech 5km Fundraiser Race and 1 Mile Fun Run/Walk is an exciting event taking place at Joaquin Miller Park, aimed at supporting the Oakland Tech Cross Country and Track Team. Participants can choose between a challenging 5K trail run or a more leisurely 1-mile fun run/walk, both set again..

The Fire on the Mountain 50K Trail Race is set to take place on November 2, 2025, in Little Orleans, MD, within the scenic Green Ridge State Forest. Participants can choose between two distances: a challenging 50K (approximately 31.95 miles) and a 25K (about 16.3 miles). The race features multiple a..

The Woldumar Trail Run, taking place on November 2, 2025, at the Woldumar Nature Center in Lansing, MI, invites runners, walkers, and nature lovers to enjoy a scenic fall experience. This annual event features a 5K Trail Run and the Delta Dental Muskrat Mile, promoting outdoor education and environm..

The Autumn Squatch 10K, 20K, and 50K is an exciting trail running event held at Alum Creek State Park in Lewis Center, Ohio. Scheduled for November 2, 2025, this race invites participants to explore the scenic Rocks and Roots trail while searching for the elusive Autumn Squatch. Runners can choose f..

The Saratoga Stryders Fall Back 5 Mile Trail Race is an exciting running event held at Saratoga Spa State Park. Participants can enjoy a scenic course featuring hills, ridges, and a mix of trails, showcasing the park's natural beauty. The race encourages runners to embrace the autumn season, with re..

The NorCal Backyard Ultra is an endurance running event taking place at Folsom Lake’s Beals Point, featuring two main races: the Last Person Standing and the Mini Last Person Standing. Participants must complete a 4.2-mile loop every hour, with the Last Person Standing competing until only one runne..

The Barn Creek Backyard Ultra is a unique running event held in Jamestown, TN, featuring a 4.167-mile out-and-back course that traverses a mix of gravel, road, and trail terrain. Participants aim to complete as many loops as possible within an hour, adhering to official backyard ultra guidelines. Th..

The Mamba 100, taking place in Memphis, TN, is an exciting ultrarunning event featuring multiple race distances: 100 miles, 100K, 50K, and 25K. This race is a Western States Qualifying event, encouraging participants to push their limits in a supportive and vibrant atmosphere. The course consists of..

The Q50 Races Chupacabra is an exciting running event featuring two distance options: 10 miles and 5 miles. Scheduled for November 7, 2025, this race encourages participants to embrace a fun and challenging atmosphere. The event promotes health and wellness while fostering a sense of community among..

The Antelope Island 50k is a trail running event organized by Buffalo Run Adventures, known for its unique and laid-back atmosphere. Set against the stunning backdrop of Antelope Island, participants can expect a well-organized race that emphasizes the spirit of trail and ultrarunning. The event is ..

The KUS 6/12/24 Hour Run is an ultramarathon event taking place in Valley Center, Kansas, featuring multiple race durations: 6 hours, 12 hours, and 24 hours. The event is held on a certified 400-meter track, allowing participants to run as many laps as they can within their chosen time frame. Runner..

The Standing Boy Trail Festival, taking place on November 8, 2025, in Columbus, GA, features a scenic and challenging trail running experience. Participants can choose between a 50K race, which consists of three loops around the park's perimeter trails, or a 10-mile race, completing one loop. The ev..

The Schaeffer Half Marathon and 10K Trail Run, organized by EX2 Adventures, takes place at the scenic Button Farm in Germantown, MD. This event features a challenging course known for its twisty singletrack and open farm field running, with distances of 6.7 miles for the 10K and 13.3 miles for the h..

The Kessel Run Ultra, taking place in Fruita, Colorado, offers an exciting trail running experience with various distances including 50 Miler, 40 Miler, 50k, 20 Miler, and 10 Miler. Known for its stunning scenery, participants can enjoy breathtaking views of the San Juan Mountains and the Colorado N..

The Rosaryville Veterans Day Trail Race is an annual running event held at Rosaryville State Park in Upper Marlboro, Maryland. This race features two distance options: a 50K and a 20K, catering to both seasoned ultramarathoners and those looking for a shorter challenge. The event not only promotes p..

The HRCA Backcountry Wilderness Half Marathon is an annual trail race held in Highlands Ranch, Colorado, featuring a challenging 13.1-mile course through scenic landscapes. Participants will navigate dirt, gravel, and singletrack paths, with opportunities to encounter local wildlife and enjoy stunni..

The Catalina Island Half-Marathon & 10K is a premier trail running event set to take place in Avalon, California, on November 8, 2025. Participants can choose between a challenging half-marathon and a scenic 10K route. The half-marathon features steep climbs and breathtaking views of the Pacific Oce..

The Pocantico Hills Marathon, taking place in Rockefeller State Park, offers both a marathon and a half marathon on scenic, rolling courses with stunning views of the Hudson River and Palisades. Participants will enjoy a picturesque route featuring fields, stone walls, lakes, and forests. This event..

The Prisoner of War Trail Race, scheduled for November 8, 2025, at Camp Croft State Park in Spartanburg, SC, features three race options: a 50k, a 25k, and an 8-mile event. This trail race not only offers a challenging course through diverse landscapes but also serves as a tribute to military vetera..

The Truth or Consequences Ultra is an exciting running event taking place in Truth or Consequences, New Mexico, featuring a challenging 50K, Half Marathon, and 10K. Set against the backdrop of rugged high desert terrain at an elevation of 4200 feet, participants can expect steep, rocky, and sandy co..