Trail Running Calendar United States 2025-2026

The Emerald Mountain Epic will take place in Steamboat Springs from Saturday 2 August 2025 to Sunday 3 August 2025.

The Boulder Rez Marathon, held at Boulder Reservoir in Boulder, Colorado, offers a scenic and mostly flat course with only 200 feet of elevation gain. Runners enjoy trails and dirt roads alongside the reservoir, with stunning views of the water and the Rocky Mountains. The event features multiple di..

The 26th Annual Trojan Trek is a running event held in Morristown, Tennessee, at Panther Creek State Park, a scenic 1,444-acre park on the Cherokee Reservoir. The race features a certified 5K course starting at the lower soccer fields, with ample parking near the pool and playground area. Panther Cr..

Loopy Looper is an ultra running event held at Cooper River Park in Pennsauken, New Jersey, featuring a fast and mostly flat 3.75-mile paved loop with scenic views of the Philadelphia skyline and river. The race offers multiple distances including 12-hour, 24-hour, and a 101.25-mile ultra, as well a..

The Blue Hill Mountain Trail Fest in Blue Hill, Maine, offers a scenic multi-distance trail running event with 5k, 10k, 25k, and 50k options. The course features a figure-eight loop design ascending Blue Hill Mountain, a 934-foot monadnock with coastal views, wildflower fields, and technical forest..

The DHRT 50K is an exciting trail running event set in King George, Virginia, taking place on August 2, 2025. This challenging race traverses the scenic Dahlgren Railroad Heritage Trail, offering participants a flat and well-maintained course primarily shaded by trees. Runners will face the added ch..

The MCW Westfield Ultra is an endurance race held at Tamaques Park in Westfield, NJ, on August 2, 2025. Participants can choose from 3, 6, 9, 12, or 24-hour events, aiming to complete as many laps as possible around a 0.8-mile course that features pavement and gravel paths. The event fosters a suppo..

The Durty B-EE-RR-UN 6hr is a self-supported, low-key running event held in downtown St. Petersburg, Florida, at Flora Wylie Park. Participants run a roughly 3.6-mile loop along waterfront sidewalks, including the St.Pete Pier and nearby parks. The race lasts six hours, challenging runners to comple..

The Rodeo Valley Trail Run, held in the scenic Marin Headlands near Sausalito, CA, offers trail races of 8K, Half Marathon, 30K, and 50K distances. Starting near historic Fort Cronkhite and Rodeo Beach, the course features challenging steep climbs and descents along coastal trails with stunning view..

The Aspen Backcountry Marathon, held in Aspen, Colorado, offers three challenging trail running distances: a 50K, a marathon, and a heavy half-marathon. The courses run almost entirely on dirt trails featuring diverse terrain with significant ascents and descents, and elevation gains up to 5,512 fee..

Drew's Angel Creek 50 is a challenging point-to-point trail race near Fairbanks, Alaska, featuring 50-mile and 50K distances. The event showcases a mix of rugged, technical trail sections and scenic ridge lines, testing runners' endurance and trail skills. The 50-mile race begins at Twin Bears Camp..

The Hamster Endurance Runs is a multi-distance trail race held annually at Lake Padden, featuring 6, 12, 24, and 32-hour events. Created in 2013, the race raises funds for local organizations, with proceeds supporting the Whatcom Family YMCA's Girls on The Run program. Runners traverse a well-marked..

The Mattawan Wildcat Road & Trail 5K is an exciting running event that combines both road and trail running, taking place at Mattawan High School. Participants will navigate a course that includes paved roads and a half-mile wooded trail featuring various terrains. The event promotes community engag..

The South Texas Rollers Cross Country Invitational Season Opener is a 5K race held in Corpus Christi, Texas. This event welcomes runners of all levels and offers overall, age group, and team awards, along with finisher medals. The race takes place at West Guth and aims to provide a memorable cross c..

Brayden's Trail of Strength is a 10k trail run and hike set in the scenic Tioga State Forest. Participants will navigate a diverse terrain that includes old grades, steep slopes, snowmobile trails, stream crossings, and dirt roads. The event aims to raise funds for the Chromosome 18 Registry and Res..

The River to Sea 12/6 Hour Trail Race takes place in Palm Coast, Florida, featuring a nearly one-mile loop trail surrounded by palm and oak trees in a classic old Florida hammock setting. The course is flat, shaded, and nontechnical, offering a scenic and comfortable running experience between the r..

The Moorehead Park Trail Mazathon is a scenic marathon trail run set in Moorehead Park, Ida Grove, Iowa. Scheduled for August 2, 2025, the event features three distance options: a full 26.2-mile marathon, a 17.6-mile 2/3 Mazathon, and an 8.8-mile 1/3 Mazathon. Participants will navigate well-marked..

The Three Degrees of Hell is a challenging running event organized by Triple Dare Running Co., held at the Silver Springs Recreation Center in Henderson, Nevada. It features three race distances: a 10K, 5K, and 1-mile race, with start times in the evening. The course offers a demanding route, and pa..

The Skyline 50K Endurance Run, held annually in August at Lake Chabot Marina in Castro Valley, California, is one of the oldest continuously running 50K races in the U.S. The course features a large loop through the scenic East Bay Regional Parks, reaching Skyline Gate. Known for its welcoming atmos..

Run The Woods-Oxbow is an annual trail running event held at Oxbow Park & Zollman Zoo in Byron, Minnesota. The 7th edition, scheduled for August 3, 2025, offers three race distances: 10 miles, 5 miles, and 2 miles. The course features scenic trails through the park, including challenging hills and t..