Trail Running Calendar United States 2025-2026

The 16 Hour Lock-In is an ultrarunning event held at Carolina Beach State Park near Wilmington, North Carolina. Participants have 16 hours to complete as many 4.5-mile loops as they wish on a relatively flat, groomed trail featuring two hills and varied terrain including dirt, sand, pine straw, and..

The Camp Chestnut Ridge Trail Race, held annually at the Chestnut Ridge Camp and Retreat Center in Efland, NC, offers a scenic trail running experience through rolling hills and old hardwood forests. The event features two main trail races of approximately 4 and 8 miles on single-track dirt and grav..

Colt 45 Trail Run, staged by A1 Ultra Events, is held at Colt Creek State Park in Lakeland, Florida. Four distances are offered: Colt Double Malt (60 miles, four 14‑mile loops plus a bonus loop), Original Colt 45 (45 miles, three 14‑mile loops plus a 3‑mile starter loop), Colt Silver (45K, two 14‑mi..

The Stuffed Turkey Endurance Races take place at Jester Park Equestrian Center in Granger, Iowa. Options include 10 Miler, 50K, 50 Mile, and 100 Mile, all on a 100% trail course of rolling hills with a long flat stretch that can be fast or tough depending on Iowa weather. Each loop gains 455 feet, t..

Santa Trail 5K at Dugas Community Park in Scottsville, Kentucky, offers a festive 5K on the Dumont Hill trail system. The main event is a 5K trail run/walk, with an accessible loop for walkers, runners, and those pushing strollers or rolls. A Child Dash for ages 10 and under and a virtual participat..

Tupelo Trail Shuffle returns for year 4 at Trace State Park in Belden, Mississippi, near Tupelo. The event offers 10K and 20K trail races run on mostly single-track through hardwood timber and old-growth pines, with portions along Trace State Lake. The course is fun but challenging, with rolling hil..

The Dinosaur Valley Endurance Run takes place at Dinosaur Valley State Park in Glen Rose, Texas. The event offers five distances—100 Miler, 100K, 50K, 25K, and a 5 Miler—designed to challenge runners of all levels. Runners traverse a hilly course with a mix of soft dirt, rocks and roots; some sectio..

Death by 5k Oak Mountain is a unique 24-hour running challenge held at Oak Mountain State Park in Pelham, Alabama. Participants must complete ten 5k runs spaced 2.5 hours apart, starting near the Dogwood Pavilion at the South Trailhead. The course loops counterclockwise from the Lake Trail to Rattle..

Last of the Felascans is a backyard-style ultra held at San Felasco Hammock Preserve State Park in Alachua, Florida. Racers tackle a 4.167-mile loop every hour, with the loop distance engineered so a 24-hour day yields 100 miles. The course combines daytime forest trails and a dirt road section afte..

Lake Haigler 12-Hour is a night-time ultrarun held at the ASC Greenway in Fort Mill, South Carolina. The race centers on a 5K loop around and near Lake Haigler, run as a continuous 12-hour event on a Saturday. The atmosphere is intimate and trail-focused, with a single aid station at the start/finis..

The Tuckahoe 25k is a trail race in Queen Anne, Maryland. It covers 25k (about 15.5 miles) on mostly single-track trails with some wider horse trails. The course is not overly technical but includes runnable hills, rooty, muddy sections, and varied conditions.Runners can expect three fully stocked a..

The Armadillo Dash 5K & Half Marathon Trail Run takes place at the Bonnet Carré Spillway Trail in Norco, Louisiana. This event offers two race options: a 5K trail run suitable for all levels and a challenging 13.1-mile half marathon on well-maintained, clearly marked wooded trails featuring varied t..

Circle Endurance Event 24 Hour is a USATF-sanctioned ultramarathon held at Ringgold High School in Ringgold, GA. The race invites 24-hour endurance on a track, with option distances of 3, 6, 12, and 24 hours. Runners circle the track continuously, aiming to complete as many laps as possible; each la..

Duncan Ridge Trail 50K/30K is a rugged trail race in the North Georgia Mountains, starting and finishing at Vogel State Park’s Lake Trahlyta near Blairsville. The event offers 50K and 30K distances on the Coosa Backcountry and Duncan Ridge Trails, with more than 10,000 feet of elevation gain. The co..

Backyard Ultra - Summit Trail Racing, in Marble Falls, TX, is a Last Person Standing ultramarathon inspired by Lazarus Lake. Runners complete a 4.1667-mile loop each hour, returning to the start within 60 minutes as long as more finishers remain. The day loop is a flat, wide 2.08-mile trail run twic..

Colorado Cold Rush Ultra, held in Colorado Springs, offers 50K, half marathon, and 10K options. The race is billed as the "coolest" winter running event and features a route starting at Bear Creek Regional Park, climbing High Drive, and threading through tunnels from the Colorado gold rush along Gol..

The Midland Mountain Trail Series is a festive trail running event held in Harbison State Forest, Columbia, South Carolina. Featuring a full marathon (two laps) and a half marathon (one lap), the course winds through scenic woodlands, creeks, and rolling hills adorned with vibrant fall foliage. The..

The JMF Trails Hillbilly Half is an annual challenging half marathon held at Jefferson Memorial Forest in Louisville, KY. The 10th edition features a rugged trail course starting at the Horine parking area, looping around a lake, descending Yost Ridge Trail to the Welcome Center, then following the..

The Dirty Dirty 15K is a trail running event held at the River Grove Picnic Area in North Chagrin Reservation, Willoughby Hills, Ohio. As the final race of the 2025 Dirty Trail Series, this challenging two-loop 15K course offers runners a scenic tour through diverse landscapes including woodlands, m..

Darrington Single Track Trail Challenge is a multi-distance trail-run event held in Pilot Hill, California, near Sacramento. Participants can choose from four distances: 36 Miler, 18 Miler, 10K, and 5K. The race traces a single-track route along the shores of Folsom Lake, featuring stony dirt paths..