Trail Running Calendar United States 2024-2025

The Riverlands 100 is Maine's first and only 100-mile trail race, taking place at Androscoggin Riverlands State Park in Turner, ME. Participants can choose to run solo or as part of a 5-person relay team, with each relay member completing a 20-mile section. The course features a mix of ATV trails an..

Niwot's Challenge is a challenging ultramarathon held annually in Colorado's Front Range, designed for experienced runners. Modeled after the Barkley Marathons, this event features a secretive course that requires participants to navigate primarily off-trail using a map and compass. With a limited c..

The Dawn To Dusk To Dawn Track Ultras is an exciting running event taking place in Sharon Hill, Pennsylvania. Scheduled for May 10-11, 2025, the event features multiple race options, including a 24-Hour Run, a 12-Hour Run, a 50K Run, and a Virtual 50K Run. Participants can also contribute through do..

The Ansonia Trails 5K is a vibrant running event taking place in Ansonia, CT, designed for participants to enjoy a fun and engaging experience. This second annual race features a unique two-lap course of approximately 1.55 miles, making it a slightly varied 5K distance. Limited to 50 runners, the ev..

The Wildflower Trail Race is a two-day running event scheduled for May 10-11, 2025, at Bastrop State Park in Texas. Participants can choose from a variety of distances, including 5K, 10K, 25K, 50K, a new 100K ultra, as well as marathon, half marathon, and 7-mile options. The race features scenic tra..

The Lake Wobegon Trail Marathon, organized by the St. Cloud River Runners, is a scenic running event that takes place annually on the picturesque Lake Wobegon Trail. The marathon features a special four-year medal series, enhancing the experience for participants.The next marathon is scheduled for M..

Hoof It on the Hill is a fundraising trail race held in Boutwell Hill State Forest, Cherry Creek, NY, supporting the Chautauqua County Equestrian Trail System. Participants can choose from four distances: 52k, 26k, 12k, and 6k, traversing diverse terrains including forests, meadows, and streams. The..

The Don's Backyard BBQ 20K Trail Run Challenge, hosted by Dirty Spokes Productions, takes place at Fort Yargo State Park in Winder, Georgia. This annual event features a 20K solo run and a 10K solo run, both designed to test participants' speed and stamina through a series of 5K segments. Runners wi..

The Nitro Trail 2025 is an exciting running event taking place at Point Pinole Regional Shoreline Park in San Pablo, California. Participants can choose from three race distances: a half marathon, 10K, and 5K, making it suitable for runners of all levels. The event celebrates the park's transformati..

The TARC Wapack and Back is a trail running event organized by the Trail Animals Running Club, taking place along the scenic Wapack Trail in Ashburnham, Massachusetts. Participants can choose from three distance options: 21.5 miles, 43 miles, and 50 miles. The course features challenging terrain wit..

The Race for Open Space is a multi-course trail running event scheduled for May 10, 2025, in the scenic Palo Corona Regional Park. This event aims to raise funds and awareness for the Big Sur Land Trust, promoting access to parks and open spaces in Monterey County. Participants can choose from vario..

The Dark Skies 100K is a challenging point-to-point trail race set in the scenic landscapes of West Virginia. Starting at the Seneca State Forest headquarters, participants will traverse a variety of terrains, including the Allegheny and Greenbrier River trails, culminating in a finish at Snowshoe V..

The F^3 Cap Sauers Trail Marathon & 10 Mile is a running event scheduled for May 10, 2025, in Palos Hills, Illinois. Participants can choose between a full marathon (26.2 miles) and a 10-mile race, both set within the scenic Cap Sauers Holding Nature Preserve, the largest undeveloped area in Cook Co..

Muddy Crudd's Ultra Trail Party is a fun and challenging running event held along the scenic banks of the Chattahoochee River in Valley, AL. Celebrating its third year, the event features timed challenges including 12-hour and 6-hour races for those looking to push their limits, as well as a 5K trai..

The John Wayne Grit Series - Newport Coast is a running event that features 50K, 25K, and 5K races set against the stunning backdrop of Crystal Cove State Park in Laguna Beach, California. Participants navigate hill climbs and enjoy ocean views along dirt roads and single-track trails. The event sup..

The Fruita Trail Half Marathon is an exciting 13.8-mile race set in the stunning landscapes of Fruita, Colorado. Participants will navigate a challenging loop featuring flowy singletrack trails, short steep climbs, and breathtaking views of the surrounding buttes and mesas. This event is part of the..

The "3 Days at the Fair" event in Augusta, NJ, scheduled for May 12-18, 2025, offers a variety of ultra-running challenges, including 144-hour, 72-hour, 48-hour, 24-hour, 12-hour, and 6-hour races, as well as marathon and 50K options. The course features a certified one-mile loop composed of pavemen..

The Born to Run Ultra Marathon Extravaganza is a unique trail running event held on a private cattle ranch in Santa Barbara, California. Scheduled for May 14-18, 2025, participants can choose from various race options, including 4-day, 3-day, and single-day events, with distances ranging from 10 mil..

Infinitus is an extraordinary endurance event hosted by The Endurance Society, taking place from May 15 to May 25, 2025, in Ripton, Vermont. Participants can choose from a variety of challenging distances, ranging from 9 miles to an extreme 888k (551 miles). The event features rugged trail races wit..

The East Texas Ultra is a trail running event held at Lake Bob Sandlin State Park, featuring distances of 7K, 14K, 28K, and 50K. Participants can enjoy scenic dirt single-track trails amidst the beautiful piney woods of East Texas. The race follows a 4.5-mile loop, with various aid stations providin..