Trail Running Calendar United States 2025-2026

The Slopeside Slumber Party is a nighttime trail running event held at Roundtop Mountain Resort in Lewisberry, PA, on August 16, 2025. Participants can choose between a main race, offering three hours to complete as many loops as they can on a challenging 1.5-mile course with 600 feet of elevation g..

The Riley Trails Marathon is an annual running event held in Holland, Michigan, featuring a full marathon, half marathon, 10K, and a 4-person relay. The race takes place on a scenic course that starts and finishes at Benjamin's Hope, with runners completing loops at Riley Trails. The event emphasize..

The Southern Fried 50/50 is an annual trail running event held in Columbus, Georgia, celebrating its 8th year in 2025. Participants can choose from three distances: 25K, 50K, or 50 miles. The race features scenic routes along the Fall Line Trace, Dragonfly Trail, and Columbus RiverWalk, offering vie..

The Aliza Lapierre Fan Club Trail Race is an annual charity event organized by the Richmond Trail Running Club to promote community, outdoor exploration, and personal challenge. Held in Vermont, the race features two distances: a 50k and a 26k, both combining rugged trail running with some road segm..

The Pajarito Mountain Run is a 10K trail race held in Los Alamos, New Mexico, as part of the Northern New Mexico Summer Trail Series. The course begins and ends near the Pajarito Mountain Lodge, featuring a challenging 2.4-mile ascent to the summit at 10,442 feet, followed by a winding descent on th..

The Miner's Lady 8-Hour is an endurance running event held in Harpers Ferry, West Virginia, where the Blue Ridge Mountains meet the Shenandoah River. Participants run a challenging 10K loop featuring 850 feet of elevation gain, primarily on single-track trails that pass waterfalls and creek crossing..

The Hot August Night Trail Race is an exciting night running event taking place in the Citrus Tract of the Withlacoochee Forest, Inverness, FL. Participants can choose from three distances: 5 miles, 10 miles, or 20 miles, all set against the backdrop of a beautiful forest under the stars. The course..

The Scorchin' Squirrel Trail Run offers a thrilling trail running experience at the Ferncliff Camp and Conference Center in Little Rock, Arkansas. Scheduled for August 16, 2025, participants can choose from four distance options: 10k, 11.5 miles, 15.5 miles, or 19.5 miles, each featuring varying loo..

The Post Canyon Half Marathon, held in Hood River, Oregon, is a lively trail race celebrating its 11th year with a fun, inclusive atmosphere where every participant is a winner. The course features about 2,300 feet of elevation gain, offering scenic mountain views of Oregon and Washington, mini wate..

The Cook Forest 25K Trail Challenge is a scenic trail race held in Cook Forest State Park, Cooksburg, Pennsylvania. Covering over 17 miles, the course links 13 state park trails, featuring a challenging loop that includes a scramble up Seneca to the iconic fire tower and runs alongside the picturesq..

The Almaden Hills Trail Run - Summer is a challenging trail running event held at Almaden Quicksilver Park in the scenic Almaden Valley, San Jose, California. The course features a mix of 60% dirt roads and 40% single-track trails, with significant hills offering great views and beautiful countrysid..

The 3 Legged Monster Race, held in the Mark Twain National Forest near Steelville and Leasburg, Missouri, is a unique relay event featuring running, mountain biking, and paddling legs for teams of two. The race showcases the scenic Ozark Trail, with running through hardwood forests and bluff overloo..

The Leadville Trail 100 Mile Run, held annually in Leadville, Colorado, is a legendary ultramarathon known as the "Race Across the Sky." Established in 1983, this grueling 100-mile out-and-back course challenges runners with extreme Rocky Mountain terrain, starting at 10,200 feet and reaching a peak..

The Olympic Mountains Trail Races, held in the Olympic National Forest near Quilcene, Washington, offer challenging ultra-distance trail running events over two days in August. The races include a 100K ultra with 14,200 feet of elevation gain on mostly single-track trails, a 50K featuring 8,600 feet..

The TUFF ENUFF Trail Run is scheduled to take place from August 16 to August 25, 2025, in Woodway, Texas. This event features a variety of running options, including a 5K Trail Run, a 10K Trail Run, and virtual versions of both distances. Participants can enjoy the scenic trails as part of the Huaco..

The Twisted Branch Trail Run is a challenging 100K ultra running event held in the Finger Lakes region of New York, starting near Naples, NY. The point-to-point course follows the historic Bristol Hills Branch trail, featuring nearly 95% single-track terrain through rugged and scenic landscapes. Wit..

The Fabulous Fahnestock Trail Races take place in Fahnestock State Park near Cold Spring, NY, offering distances of 50K, 25K, and a 5.5-mile race. The course features a mix of runnable dirt roads and technical single-track trails, with scenic views including lakes, ponds, and old rail beds. Runners..

Beaverfoot is a nighttime trail running event held at Beavers Bend State Park in Broken Bow, Oklahoma, nestled in the scenic Ouachita Mountains. The race offers three distances: a 5K, an 11-mile, and a challenging 22-mile course. Runners traverse rocky, rooty, and dirt single-track trails including..

The Cheyenne Mountain Run is an annual trail running event held at Cheyenne Mountain State Park in Colorado Springs. Celebrating its 10th year in 2025, the event offers three race distances: 5K, 10K, and 25K. The course features scenic trails within the state park, providing a challenging and enjoya..

The Black Copperhead Sting 50k is an ultramarathon event held in Belmont, North Carolina, hosted by Dirty Wolf Racing, LLC. The race takes place at Rocky Branch Park and features multiple distances including 50K, 25K, and 5K. The course is a scenic loop incorporating trails such as the Catawba Threa..