Trail Running Calendar United States 2025-2026

The Calarat Challenge Trail Running Festival takes place in Jamestown, Colorado, at the scenic Cal-Wood Education Center and Balarat Outdoor Education Center. Held over Labor Day weekend, the event features multiple trail races including a half marathon, 10K, 5K, Kids 1K, and combination races like..

The Pinellas Trail Challenge is a 46-mile ultramarathon held in St. Petersburg, Florida. The out-and-back course follows the scenic Pinellas Trail, starting in St.Petersburg, heading north to Tarpon Springs, and returning to Dunedin. This long-distance event offers runners a unique opportunity to ex..

The Last Man Standing Ultramarathon is a backyard ultra event held at Pineland Farms in New Gloucester, Maine. The race features a challenging 4.2-mile loop on wooded trails with moderate elevation gain. Participants must complete each loop within one hour to continue, with laps starting hourly unti..

The Enlightenment Mountain Run is a challenging 10K trail race held at Angel Fire Resort, New Mexico. The course features a demanding vertical climb of approximately 2,000 feet known as the "Chile Express," followed by an exhilarating descent along the Enlightenment Trail singletrack back to the sta..

The Leaky Hourglass Ultra is a unique Last Man Standing ultramarathon held near Half Way, Missouri, about 20 miles north of Springfield. The race features a challenging 4.167-mile out-and-back loop on a chip-sealed rural highway with rolling hills and approximately 250 feet of elevation gain per lap..

The Zombie Backyard Ultra is a challenging endurance running event held at Oak Mountain State Park in Pelham, Alabama. Participants run a 4.167-mile loop with approximately 500 feet of elevation gain and loss. The race follows a backyard ultra format where runners start a new loop every hour and mus..

The Dandelion Run is an entry-level trail race held at Camp Mt. Luther in Mifflinburg, Pennsylvania. Scheduled for August 30, 2025, it offers both 5K and 10K distances, with the 10K being a double loop of the 5K course.The trail is marked with mile indicators and includes one water stop. Electronic..

The Leave No Trace Trail Half Marathon, held at Camp Manatoc in Peninsula, Ohio, offers runners and hikers a challenging and scenic experience on private trails usually closed to the public. The event includes a half marathon, a 15k, and a 5k, with courses featuring mostly single-track paths through..

The Booneville Backroads Ultra, held in Booneville, Iowa, offers challenging trail races including 100-mile, 100K, 50K, and 10K distances. The course features the scenic Bridges of Madison County and rural Iowa countryside, with significant elevation gain and rolling hills, promising a tough but rew..

The Wildcat Ultras is an ultramarathon event held at the Escambia County Equestrian Center in Pensacola, Florida. The race features multiple distances including 100 miles, 100K, 50 miles, 50K, and 15 miles, all run on a 2.5-mile loop course of mostly grass and dirt with minimal elevation change. Kno..

The Black Bear Trail Races, hosted by White Mountain Endurance in Waterville Valley, New Hampshire, offer a challenging and scenic trail running experience. The event features four distances: a demanding 50K with 7,700 feet of elevation gain over iconic 4,000-foot peaks, a 23K course on the oldest m..

The Yeti Snakebite 50/50 is an intense timed trail running event held at Sweetwater State Park in Lithia Springs, Georgia. Returning to its original August date, this race challenges participants to run as far as possible within 8.88 hours on a demanding 6-mile loop course featuring river crossings,..

The Corps of Discovery Trail Races, hosted by the St. Louis Track Club, take place annually in the scenic Weldon Spring Conservation Area near Saint Charles, Missouri. The event offers three distances: a 5-mile Clark Trail, a new 8-mile Lewis Trail, and a half marathon combining both trails for a to..

The Creede Mountain Run, held in Creede, Colorado, is a challenging and scenic mountain race established in 1987. It offers four race distances: 2 miles, 12 miles, 22 miles, and a 50K ultramarathon. Starting at 8,850 feet elevation in the historic mining town, the course leads runners through the st..

Rock Hawk Trail Races take place in Castle Rock, Colorado, featuring distances of 50K, 25K, 10K, and 5K on the scenic and rolling trails of Phillip S. Miller Park and the Ridgeline Trail systems. The course offers a thrilling yet not overly technical experience, suitable for both novice and experien..

The Gristmill Grind 10K is a challenging trail race held annually at Franklin Creek State Park in Franklin Grove, Illinois. Known as one of the most difficult 10Ks in the area, the course features technical trails with approximately 800 feet of elevation gain, multiple hill climbs, and four creek cr..

Death by 5K in Brandon, Mississippi, is a unique 24-hour endurance challenge held at the RunStrong Training Center. Participants attempt to complete ten 5K runs within 24 hours, with races starting every 2.5 hours on the same course that begins and ends at the training center. Runners can rest in th..

The Iron Mountain Trail Run is a challenging trail race held annually in Damascus, Virginia, featuring four distance options: 16, 30, 40, and 50 miles. The course traverses the Iron Mountain ridgeline through Jefferson National Forest, following sections of the former Appalachian Trail, with varied..

The Barn-B-Q Trail Festival, held in Berkeley Heights, New Jersey, is a unique outdoor event combining trail running or hiking with a lively barn party. Set in the historic Deserted Village of Feltville within Watchung Reservation, participants can enjoy self-guided trail tours ranging from 2 to 6 m..

The AIDSPIRIT USA Marathon, held in Harlowton, Montana, is a scenic race starting in the Little Belt Mountains within Lewis & Clark National Forest and finishing in historic Harlowton. The event features a full marathon, half marathon, 10K run, and 5K fun run, all on compacted, calcium chloride-trea..