Trail Running Calendar United States 2025-2026

The Dark Horse Trail Series features a range of running events, including a marathon, half marathon, and 10k, set in the scenic Tryon International Equestrian Center in Mill Spring, North Carolina. Scheduled for August 23, 2025, this event invites both seasoned and novice runners to experience the b..

The Double Dipsea is a challenging 13.7-mile trail run that takes place annually, starting at Stinson Beach, California. First held in 1970, this race is known for its unique handicapped start format, where slower runners begin first, creating a dynamic environment of constant passing on narrow trai..

The Harriman 25K/50K Trail Run, held annually at Harriman State Park near Island Park, Idaho, offers a scenic and well-curated trail running experience. The event features three distances: an 8.1-mile race, a 25K, and a 50K (two laps of the 25K course). Runners enjoy beautiful single-track trails th..

The Staunton Rocks! Marathon & Half is a trail running event held at Staunton State Park in Pine, Colorado, in the Front Range Mountains southwest of Denver. The race offers two distances: a marathon (26.3 miles with 4,500 feet of elevation gain) and a half marathon (13.1 miles with 2,200 feet of ga..

Run The Hawk Trail Run takes place at the historic Blackhawk Ski Club in Middleton, Wisconsin. This endurance event features 3, 6, and 12-hour challenges where participants complete as many laps as possible on a scenic 2.25-mile loop with 345 feet of elevation gain per lap. The course includes diver..

The Green Lakes Endurance Runs, held at Tulip Hill Picnic Area in Green Lakes State Park, Fayetteville, NY, offer ultrarunning events including 100K, 50K, 25K races, and a new GLER GALEFORCE 12 Hour timed race. The courses feature varied terrain with well-maintained single and double track trails, g..

Hell on Hogsback is an endurance challenge held in Cleveland, Ohio, designed to test both physical and mental strength. Participants tackle a 0.75-mile out-and-back course with significant elevation changes, aiming to complete as many laps as possible within their chosen time frame. The event featur..

The Dirty Dozen 50K is a challenging ultramarathon held in New York City’s Forrest Park. Participants are tasked with completing a 50-kilometer race that involves running 12 hilly loops, testing both endurance and mental toughness. Known for its difficulty, the event attracts serious trail runners s..

The Terrible Twelve is a 12-hour self-supported trail running event held at the Warhill Nature Trail in Williamsburg, Virginia. Participants run or walk as many 3.7-mile loops as possible on a crushed gravel course featuring rolling hills and scenic views, though personal lighting is required for ni..

The Wild Turkey Trail Runs, hosted by the West Virginia Mountain Trail Runners, take place at Valley Falls State Park near Fairmont, WV. This free event offers a variety of distances including 50 miles, 50K, 25K, 10 miles, 5 miles, and shorter options, all run on a challenging 10-mile figure-8 loop..

The Royal Oaks Sunrise Trail Race, held in Kirksville, Missouri, offers a scenic off-road running experience through the Big Creek Conservation Area and Thousand Hills State Park. Participants can choose between a 10K or a 3-mile walk, with the race highlighting the beauty of a sunrise over Forest L..

The Telluride Mountain Run, held in Telluride, Colorado, is a demanding mountain race set in the scenic San Juan Mountains. Offering three distances—40 miles, 24 miles, and 13 miles—this event challenges runners with technical terrain including old mining roads, singletrack trails, alpine tundra, ex..

The North Country Trail Run is a premier trail running event in the United States, featuring multiple race distances including a 50 Mile Ultra Marathon, 50K Ultra Marathon, 26.2 Mile Marathon, and a 13.1 Mile Half Marathon. Scheduled for August 23rd and 24th, 2025, this event is known for its impres..

The Sunflower Trail Run is an annual running event held in Buhler, Kansas, featuring a scenic course through over 20 acres of beautiful sunflowers. Participants can choose from various events, including a competitive 5K, a non-competitive 5K, a 1-mile run/walk, and a virtual 5K option. All runners r..

The Hell Creek Half & 50K is a challenging trail running event held at Wilson State Park in Sylvan Grove, Kansas, on August 23, 2025. The race features two distances: a 50K and a half marathon, both taking place on the rugged Switchgrass Mountain Bike Trail. The course offers stunning views of Wilso..

Hell Canyon is a 5-mile trail race held near Custer, South Dakota, on the scenic Hell Canyon Trail in the Black Hills. The course features a challenging climb to a stunning overlook, followed by a descent through the canyon with spectacular views and several creek crossings that add excitement and r..

The Foothills XC12K is an exciting cross-country running event scheduled for August 23, 2025, in Boise, Idaho. Participants can choose between two courses: a challenging 12K and a shorter 5K, both set against the stunning backdrop of the Boise Foothills. The race starts at the Military Reserve, offe..

The Paradise Valley Trail Run is a scenic trail running event held at Paradise Valley Conservation Area in Woodinville, Washington. Scheduled for August 23, 2025, it offers distances of 5k, 10k, and a half marathon, with courses featuring a mix of wide, narrow, and winding trails through wetlands an..

The Tree Trail Trot is a scenic 5K trail run set in the picturesque Salamonie Lake area, part of Indiana's Department of Natural Resources State Parks. Participants will enjoy a beautiful course that winds through gently rolling, wooded trails, starting and finishing at the Wildlife Management Pond..

The Hellbender 5k & Half Marathon is an exciting running event scheduled for August 24, 2025, in Bear Gap, Pennsylvania. Participants can choose between a half marathon and a 5k race, both of which feature scenic out-and-back courses through the picturesque Weiser State Forest. The event aims to pro..