Trail Running Calendar United States 2025-2026

The Mt. Umunhum Trail Conquest - Winter is a trail running event held at Almaden Quicksilver County Park in San Jose, California. The race offers multiple distances including a 50K, marathon, 30K, half marathon, 7-mile, 5K, mile, and a kids run.The longer courses traverse the scenic Sierra Azul Open..

The Escape from Folsom is a trail running event held at Granite Beach, Folsom Lake State Recreation Area. It features two race distances: a 10-mile run and a 5K (3.1 miles). Both courses offer scenic trails adorned with wildflowers and include multiple aid stations providing water, electrolyte bever..

The Stone Mountain Massacre is a challenging trail running event held in Roaring Gap, North Carolina, featuring distances of 50K, 25K, and 8 miles. The 50K race follows a point-to-point loop through Stone Mountain State Park trails and the Mountain to Sea Trail, with an elevation gain of 1,530 feet..

Winterläufe - The Winter Race is an annual 8K running and walking event held in Frankenmuth, Michigan, hosted by the Frankenmuth Jaycees. This scenic out-and-back road race showcases the beautiful countryside and includes a notable crossing of the historic 1904 Gugel Bridge. Participants can choose..

The North Texas Ultra is a multi-distance trail running event held at Fort Richardson State Park's North Park Unit in Jacksboro, Texas. It offers races ranging from 5K and 10K to ultra distances including 25K, 50K, 52 Miler, and 100K, plus a 25K RUCK event. The course features a scenic, open trailwa..

The Mill Stone 50K is a challenging trail ultramarathon held at the scenic Anne Springs Close (ASC) Greenway in Fort Mill, South Carolina. The race features three 10.5-mile loops of mostly single-track, technical trails with some gravel and dirt paths, including at least two creek crossings. The cou..

The Mahlon Winter Donut Trail Run & Hike is a scenic trail running event held at Saffin's Pond in the Mahlon Dickerson Reservation, Lake Hopatcong, New Jersey. Scheduled for February 8, 2026, it offers three race distances: a 5-mile loop, a 10-mile course consisting of two loops, and a 13.1-mile hal..

Gone Loco is an endurance running event held in Athens, Tennessee, featuring distances of 33 miles (55k), 11 miles, and an 11-mile ruck option. The race takes place on the scenic Eureka Trail, a flat, gravel path converted from a former railroad bed, offering runnable terrain through woodlands, rura..

The Sombrero Ultra Running Festival (SURF) is an ultramarathon event held in Middleburg, Florida, at the Clay County Regional Sports Complex. It offers a variety of timed race options including 3, 6, 12, 24, and 48-hour runs, with both day and night sessions. The course features a shorter loop with..

The Outlaw 100 Oklahoma is a challenging trail running event held at Twin Mountains in Kinta, Oklahoma. The main 100-mile race consists of eight laps on a rugged 13-mile loop featuring over 2,000 feet of elevation gain per lap, totaling approximately 17,500 feet of climbing. The course includes rock..

The Ranch 50K is a trail running event held at Daley Ranch in Escondido, California, featuring a challenging course with significant elevation gain. The 50K race consists of two loops of a 15.6-mile course, totaling 31.1 miles with 6,318 feet (1,926 meters) of climbing. A half marathon option covers..

The Holiday Lake 50K, held in Appomattox, Virginia, is a well-established ultra trail race founded in 1996. It features a scenic loop course around Holiday Lake, combining country roads and trails, making it ideal for first-time ultra runners as well as seasoned athletes. The event also includes 10K..

The Rocky 50, by USWE Trail Race, is an annual trail running event held in early February at Huntsville State Park, Texas. It features three main distances: 50 miles, 50 kilometers, and a 13.1-mile half marathon, along with a youth 1-mile run for children 12 and under. The course offers rolling trai..

The Sylamore 50K/25K Trail Run is a challenging trail running event held in Allison, Arkansas, near the White River and north of Mountain View. Scheduled for February 14, 2026, the race offers two distances: a 50K and a 25K, both featuring out-and-back courses primarily on trail with some pavement s..

The Winter Trail Fest Half Marathon and 5 Mile Run take place at Island Lake State Recreation Area in Brighton, Michigan. This winter trail event, organized by Trivium Racing, challenges participants with potentially harsh February conditions, offering a true "WTF" experience. Runners can expect a s..

The Squatchy Onesie Fest 5K is a fun and unique trail running event held at Ramapo Valley County Reservation in Mahwah, New Jersey. Participants are encouraged to wear their favorite onesies, adding a playful atmosphere to this winter race. The course is a scenic, mostly flat "lollipop" loop around..

The Hagg Mud 50K/25K is an early-season trail running event held at Henry Hagg Lake in Scoggins Valley Park near Gaston, Oregon. Since 2001, it has attracted runners who enjoy muddy, challenging courses. Participants can choose between a 50K race, which involves two loops around the lake, or a 25K r..

Whispering Pines is a free, flexible trail running event held at Whispering Pines City Park in Inverness, Florida. Featuring a 5-mile loop of mixed single-track and double-track trails with packed sand and pine needle surfaces, the course offers gentle hills, ample shade, and two paved road crossing..

Bay Breeze in San Leandro is a scenic running event held at the San Leandro Marina Park along the San Francisco Bay. Scheduled for February 14, 2026, it offers a half marathon, 10K, and 5K distances, welcoming runners and walkers of all levels. The course is mostly flat, hugging the bayside trail an..

The Frozen Trailfest, held in Fort Wayne, Indiana at Franke Park, offers participants a choice between a 10K trail run and a 20K mountain bike ride on frozen singletrack trails. Taking place in mid-February, the event embraces the chilly conditions with cold weather gear encouraged. The course start..