Trail Running Calendar United States 2025-2026

The Harvest Creek Classic is a 5K running event held at Cauley Creek Park in Johns Creek, Georgia. The race features a USATF-certified 3.1-mile rubberized trail course, one of the first of its kind in the Southeast, developed in partnership with the Georgia Department of Natural Resources. Runners e..

The Last of the Felascans is a challenging backyard ultra held in Alachua, Florida, within the scenic San Felasco Hammock Preserve State Park. Participants run a 4.167-mile loop every hour on a course featuring trails by day and dirt roads by night, with no pavement throughout. The race continues un..

The Duncan Ridge Trail 50K/30K is a challenging trail race held in the North Georgia Mountains, starting and finishing at Vogel State Park’s Lake Trahlyta near Blairsville, GA. Known as one of the toughest 50Ks in the Southeast, the course features over 10,000 feet of elevation gain along the rugged..

The Darrington Single Track Trail Challenge is a trail running event held near Pilot Hill, California, featuring multiple race distances including a 36-mile, 18-mile, 10K, and 5K. Participants will run along scenic dirt paths along the shores of Folsom Lake, navigating challenging hills and enjoying..

The Lake Haigler 12-Hour is a night trail running event held at the Anne Springs Close Greenway in Fort Mill, SC, on the Saturday before Thanksgiving. Participants run a 5K loop around Lake Haigler, with the race lasting from noon to midnight. The event offers a unique atmosphere, combining scenic n..

The Colorado Cold Rush Ultra is a winter trail running event held in Colorado Springs, featuring distances of 50K, half marathon, and 10K. The race offers a scenic and challenging course that includes historic High Drive and the tunnels from the Colorado gold rush era. The 50K starts at Bear Creek R..

The Mount Ascutney Vertical Backyard is a challenging "Last Person Standing" endurance event held in Brownsville, Vermont. Participants repeatedly ascend and descend 1,209 vertical feet each hour via two course options: three laps on the 403-foot T-bar path or one lap on a longer 1,209-foot green lo..

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..

The Dirty Dirty 15K is an exciting trail running event taking place at the North Chagrin Reservation in Willoughby Hills, Ohio. This race is the final event of the Dirty Trail Series, featuring a challenging two-loop course that showcases the park's beautiful landscapes, including woodlands and mead..

The Backyard Ultra hosted by Summit Trail Racing in Marble Falls, Texas, is a unique endurance event where participants run a 4.1667-mile loop every hour until only one runner remains. The course features a flat, wide 2.08-mile trail loop during the day, with a mix of trail and road sections at nigh..

The Dinosaur Valley Endurance Run, held at Dinosaur Valley State Park in Glen Rose, Texas, offers a challenging trail running experience with five race distances: 100 miles, 100K, 50K, 25K, and 5 miles. The course features a mix of terrain including soft dirt, rocks, roots, and gradual hills, making..

The Fall Fling 400 is an annual trail running event hosted by the CT Trailmixers at YMCA Camp Sloper in Southington, Connecticut. It features two main races: a 400-minute timed event where participants run as many loops as possible on a roughly two-mile trail course with varied terrain, including wo..

Fire Fest Ultra is a vibrant trail running event held in Logandale, Nevada, near the stunning Valley of Fire State Park. Set in the Mojave Desert's colorful backcountry, the race offers a variety of distances including 1-mile kids' run, 5K, 10K, half marathon, marathon, 50K, 50M, 100K, 100M, and a 2..

The Tuckahoe 25K is an annual trail running race held in Queen Anne, Maryland, organized by Algonquin Ultras Inc. The event features a 15.5-mile course primarily on trails, including single track and wider horse trails, with some hills, roots, and muddy sections. Runners can expect variable weather..

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 Stuffed Turkey Endurance Races, held annually at Jester Park in Granger, Iowa, offer challenging trail running events with distances of 10 miles, 50K, 50 miles, and 100 miles. The course features 100% trail terrain with small rolling hills and flat stretches, totaling 455 feet of elevation gain..

The Regal Beagle Ultra, held in Akron, Ohio, offers 50K, 25K, and 5-mile race options through the scenic Bath Nature Preserve and Bath Community Park. The looped course features a mix of paved, gravel, dirt, and grass trails, traversing wetlands, woodlands, and rolling hills with about 400 feet of e..

The Legacy Trail Ultra is a free 60K ultramarathon held annually in Sarasota, Florida, sponsored by the Manasota Track Club. The race features an out-and-back course along the scenic Legacy Trail, starting at Payne Park and heading south for 18.6 miles before returning. Participants have a 10-hour t..

The Novemberfest Race for the Nashua Children's Home will take place in Nashua on Sunday 23 November 2025. You can run 4 miles.

The Trail Blazer 10K - 5K is an annual trail running event hosted by StartLine Racing at Paloma Community Park in Peoria, Arizona. Set amidst the scenic trails of Peoria's newest community park, runners can enjoy the natural beauty and local wildlife during an Arizona sunrise. The event offers both..