Trail Running Calendar United States 2025-2026

The Chicago 7-11 Hour Endurance Run, organized by Yeti Trail Runners, is a unique trail running event set in Willow Springs, IL. Participants can choose between a 7-hour or 11-hour endurance challenge, navigating a scenic 4-mile loop through the picturesque Wolf Road Woods and Palos Preserves. The e..

The Sun Mountain 50M & 50K is a trail running event held in Winthrop, Washington, on the eastern side of the North Cascades near the Methow River Valley. The courses feature mostly gradual, smooth, and runnable mountain trails with moderate elevation gain, offering scenic views of wildflower fields..

The Nassau Suffolk Trail Marathon & 15 Miler is a premier running event taking place in Farmingdale, NY, on May 18, 2025. This event features two main races: a full marathon and a 15-mile trail run, both set in the scenic Bethpage State Park. Participants will enjoy a well-marked course that include..

The WVS Spring Trail 5.3 Mile Run, also known as the Jen Stec Memorial, is set to take place at Frances Slocum State Park in Wyoming, PA, on May 18, 2025. This annual event, celebrating its 50th anniversary, features a challenging course primarily composed of grass and earth trails. The race honors..

The 16th Annual Farmington River Run 5K Trail Race is scheduled for May 18, 2025, at Winding Trails in Farmington, Connecticut. This scenic race takes place on a designated 5K trail within a 300-acre area surrounding Walton Pond. Participants can compete for awards in various categories, including o..

The Big Hill Trail Run is an annual running event taking place at the Big Hill Trailhead near Spearfish, South Dakota. Scheduled for May 18, 2025, participants can choose between a 5K and an 8-mile course. Registration fees are $25 for both distances, with free entry for participants aged 16 and und..

The Loop the Lemur event at the Ross Park Zoo is a unique running experience scheduled for May 18, 2025. Participants can choose from various timed events, including a 6-hour, 2-hour, and 1-hour loop, as well as a family-friendly Fun Run. The course is a .8-mile loop within the zoo, where runners ca..

The Savannah SSOD (Stone Stairs of Death) Race is a challenging endurance event held in Savannah, Georgia. Participants run a 1/3 mile loop featuring paved roads, cobblestone, and notably difficult, uneven stone stairs known as the "Stone Stairs of Death." The course requires runners to ascend the s..

C'mon Armageddon is a challenging trail running event held in West Milford, New Jersey, featuring courses of 50K, 10 miles, and 5 miles. The race takes participants through rugged, technical terrain, including boulder fields, river crossings, and mountain peaks with scenic views, such as the New Yor..

The Vale of Three Falls event offers 5K, 10K, and 15K races held at Letchworth State Park on May 18, 2025. The courses are scenic out-and-back routes along gravel and hilly terrain, featuring stunning views of the Genesee River and the park’s historic landscape. Runners can enjoy post-race food, eve..

The Pet Rescue Run/Walk 5K and 1 Mile Fun Run/Walk is an exciting event scheduled for May 18, 2025, at Columbus County Park in Columbus, Michigan. This event features a timed 5K trail run/walk and a non-timed 1 Mile Fun Run/Walk, both set in a scenic environment with grass and dirt trails. Participa..

The Trav's Trail Run will take place in Newburyport on Sunday 18 May 2025. You can run between 3 and 3 miles.

The Spring Run The Farm event, scheduled for May 18, 2025, in Katonah, NY, features a 5-mile trail race and two kids' races. The main event is open to participants aged 6 and older, while the kids' races cater to ages 7-12 and 6 and under. The race takes place at Muscoot Farm, showcasing the area's..

The Chief Wetona Challenges is a family-friendly trail running event held at Mt. Pisgah State Park in Ulster, PA, featuring 4-mile and 7-mile courses. The race takes participants through scenic wooded trails and around Stephen Foster Lake, with an elevation gain of approximately 900 feet for the lon..

The Coventry Woods 5K & 10K Trail Challenge is an exciting trail running event taking place in Pottstown, Pennsylvania. Scheduled for May 18, 2025, this race features two distances: a 5K and a 10K, both set on scenic trails that include a mix of rocky terrain, roots, and various track types. Partici..

The First State Trail Race, taking place in Wilmington, DE, offers a scenic and challenging experience for runners of all levels. Set in the picturesque Brandywine Creek State Park and First State National Historical Park, participants can choose from three distances: a 10K, 25K, or 50K. Each course..

The Mt Sopris Run-Off is an exciting trail running event held in Carbondale, CO, featuring two race distances: 10 miles and 25k. Scheduled for May 18, 2025, the race takes participants along the scenic "Up & Over" single track trail, starting at Flying Dog Ranch and finishing at Rock Bottom Ranch. T..

The Last Trail Standing - Rise Up Hero Trail Runs will take place at Settlers Cabin Park, featuring multiple race distances: 25K, 15K, 10K, and 5K. This event, scheduled for May 18, 2025, encourages participants to challenge themselves and celebrate resilience through trail running. Each finisher wi..

The Dirt Days Trail Series - Mt. Airy Ridge Run is a popular running event scheduled for May 18, 2025, in Cincinnati, Ohio. Participants can choose between two race distances: a 5.4-mile single lap and a 10.6-mile two-lap course, both set in the expansive Mt.Airy Forest, which offers a scenic wilder..

The Fountainhead Half Marathon and 10K Trail Run takes place at Fountainhead Regional Park in Fairfax Station, Virginia, just 30 minutes from Washington D.C. This challenging event features a half marathon of approximately 13.5 miles and a 10K of about 7.2 miles, both on rugged trails with rocks, ro..