Trail Running Calendar United States 2025-2026

Sinister Night Runs is a night trail running event held at San Tan Mountain Regional Park in Queen Creek, Arizona. Part of the 2025 Insomniac Series, it offers multiple race distances: 54K, 27K, 18K, 9K, and 6K. The courses feature smooth, runnable trails with some rollers and rocks, winding through..

The Sunflower Relay, Half Marathon and Marathon will take place in Winthrop on Saturday 25 April 2026. You can run between 13 and 26 miles.

The C&O Canal 100 is a 100-mile ultramarathon held in Knoxville, Maryland, along the scenic C&O Canal towpath near the Potomac River and Appalachian Mountains. The course features one approximately 40-mile loop followed by two 30-mile loops, starting and finishing at Camp Manidokan. Runners enjoy te..

The TARC Spring Classic is a trail running event held annually at Jericho Town Forest in Weston, Massachusetts. Offering 10K, Half Marathon, Marathon, and 50K distances, the course features a relatively flat, smooth 10K loop with twisting trails suitable for all skill levels. Runners complete multip..

The Run The Rolling Hills Trail Race is an annual event held in Pulaski, Tennessee, featuring 10K, 5K, and Kids 1 Mile trail runs. Set against the scenic backdrop of Giles County's rolling hills, the course offers a fun yet challenging cross-country experience through beautiful countryside terrain...

The Leavenworth Firefighter Challenge is a demanding endurance event held in Leavenworth, Washington, featuring a 6.2-mile (10k) course that climbs 1,665 vertical feet through rugged National Forest terrain. This challenging race tests both the physical and mental stamina of participants. The event..

The Bronze Dragonfly 30 Hour Ultra is a multi-distance endurance running event held at Lake Mayer in Savannah, Georgia. Participants can choose from 3, 6, 12 (day or night), 24, or 30-hour races on a 1.4-mile USATF certified course featuring half paved and half rubberized track terrain. The event su..

Pandora's Box of Rox is an annual trail running event held at Reveille Peak Ranch near Burnet, Texas, just outside Austin. Scheduled for late April, it offers a variety of race distances including 4 miles, 8 miles, a half marathon (13.1 miles), a full marathon (26.2 miles), and a challenging double..

The Squatchywaska Mountainfest is a challenging trail running event held in Ellenville, New York, featuring two distances: a 25K (approximately 17 miles) and a 10-mile race. Set in the scenic Shawangunk Ridge, runners traverse rugged mountain singletracks, including pitch pines, huckleberry bushes,..

The Gator Wilderness Camp Trail Run/Walk is a scenic event held at Gator Wilderness Camp School in Punta Gorda, Florida, featuring 5k, 10k, and 15k trail races through diverse woods and shaded hammocks on 250 acres. The event supports a residential school for struggling adolescent males. Runners can..

The Bonneville Backyard Ultra, held near Provo, Utah at the Deer Creek Dam Trailhead, is a challenging last-person-standing ultramarathon. Runners complete a 4.167-mile out-and-back loop along the scenic Deer Creek Reservoir every hour on the hour. The course is mostly smooth and runnable, but the r..

The Coldwater Traverse is a trail running event held in Ogden, Utah, featuring 16-mile and 11-mile race options. The course follows the scenic Bonneville Shoreline Trail, offering runners a beautiful and engaging route. This event is suitable for both new trail runners looking to gain experience and..

The Troublesome Hollow 50K is a trail running event held in Bristol, Virginia, set in the scenic Appalachian region known as the birthplace of country music and Yeti Trail Running. The race features a 50K distance on Saturday and a 25K plus a 3-mile walk on Sunday, with courses that include flat, fa..

The Extreme North Dakota Sandhills Ultra Run Experience is a scenic trail race held in McLeod, North Dakota, featuring 25K, 50K, and 100K distances. The course traverses the Sheyenne National Grasslands section of the North Country Trail, southwest of Fargo, showcasing diverse terrain including wide..

Leatherman's Loop is a popular 10K trail race held annually in the spring at Ward Pound Ridge Reservation in Cross River, New York. The event attracts runners aged 7 to 107 and features a scenic course through natural trails. Due to high demand, entry is determined by a lottery system.The registrati..

The Oxbow Trail Runs is a family-friendly trail running event held at scenic Oxbow Regional Park near Gresham, Oregon, about 30 minutes from downtown Portland. Scheduled for April 26, 2026, the race offers three distances: 5k, 10k, and a half marathon. The courses start and finish at the Alder Picni..

The Jack Bristol Lake Waramaug Ultra Races, held in Kent, Connecticut, is a historic ultra running event celebrating its 52nd anniversary in 2026. It features three race distances: 100K, 50 miles, and 50K, all conducted on primarily flat, rolling loops around scenic Lake Waramaug on paved roads. The..

The WausaUltra event in Wausau, Wisconsin, offers three race formats: Limitless, Double, and Solo, all held on a scenic 4.167-mile mostly trail loop through Sylvan Park. The Limitless race is a "last runner standing" challenge starting Friday, where participants run one loop every hour until only on..

The Salt Flats Endurance Runs take place at the iconic Bonneville Salt Flats Speedway near Wendover, Utah. This event offers multiple distances including 5K, 10K, 50K, 50-mile, 100K, and 100-mile races, catering to a wide range of endurance runners. The courses start on the salt flats, famous for la..

Coyote Two Moon is a challenging trail running event held in the scenic Los Padres National Forest near Ojai, California. The race offers a variety of distances ranging from a 10K fun run to ultra distances including 30K, 55K, 55 miles, 100K, and a grueling 100-mile course. The ultra courses feature..