Trail Running Calendar United States 2025-2026

The Long Run - Spring Forward is a running event taking place at Jacobsburg State Park, featuring a 5-mile loop with a mix of single track and gravel trails. Participants can choose from three events: a 5-mile run, a 3-hour, or a 6-hour challenge. The course is designed to be friendly for runners, h..

The Lost Brook Trail Race, taking place at Tenafly Nature Center, offers participants a choice between a 5K and 10K trail run through the scenic Lost Brook Preserve. This event, which began in 2010, aims to promote outdoor activity while supporting the center's mission of conservation and education...

The Rosaryville Half Marathon and 10K Trail Run is set to take place at Rosaryville State Park in Upper Marlboro, MD. This event features a scenic and beginner-friendly course that winds through beautiful mixed hardwood forests and fields. Participants can choose between a half marathon and a 10K, w..

The Lag Bon 10K is a trail running event taking place in Fairfax, California, on March 30, 2025. This moderately challenging course features beautiful trails around Marin County's pristine reservoirs, with an elevation gain/loss of approximately 400 feet. The event aims to raise funds and awareness..

The Sleeping Giant Trail Runs, set in the iconic Sleeping Giant State Park in Hamden, Connecticut, promises to be one of the toughest trail races in the Northeast. Participants can choose between a challenging 25K and a grueling 50K course, featuring over 3,000 feet of elevation gain. The park offer..

The Hootie Hoo 8K Trail & 5K Paved event is set to take place at River Bends Park in Shelby Township, MI, celebrating the arrival of spring with an active community gathering. Participants can choose between an 8K trail run or a 5K paved run/walk, catering to various fitness levels. Registration inc..

The Red Horse Inn Trail Run/Walk is an exciting outdoor event taking place in Landrum, SC, designed for participants aged 21 and over. This unique experience features two courses: a 4-mile trail run and a 2-mile walk, both set against a backdrop of scenic dirt trails and gravel paths. The event emph..

The Fool's Trek/Rogaine is an exciting navigation event set in Mendham Township, NJ, where participants use maps and compasses to locate control points within an 8-hour timeframe. The 2025 edition features three distinct rogaine courses connected by mandatory routes, requiring participants to comple..

Big Al's 200 is an exciting running event taking place in Franklin, TN, featuring a unique 200-mile and 100-mile race format. This event, now in its third year, is notable for being Tennessee's first set-distance 200-miler. Participants will navigate a scenic 2-mile loop through beautiful woods, wit..

Run The Ranch is an exciting trail running event taking place from April 1 to April 5, 2025, in Loveland, Colorado, at the Sylvan Dale Guest Ranch. Participants can choose from various distances, including a 5K, 10K, and multiple timed trail runs ranging from 4 to 12 hours, with options for solo and..

The Viper 200 is an exhilarating endurance running event taking place in Shelby Farms Park, Cordova, TN, from April 2 to 5, 2025. Participants can choose from various distances, including a challenging 200-mile race, a 100-mile option, a 100-mile relay for teams of four, and a 53K race. The course f..

The Beyond Limits Ultra (BLU) is a unique multi-day running event held at Pathfinder Ranch in Mountain Center, California, from April 2 to 6, 2025. Celebrating its 13th year, BLU offers various race options, including 72-hour, 48-hour, 24-hour, 100-mile, 50-mile, and 50K races. Participants enjoy on..

The Arizona Monster 300 is an extreme 308-mile point-to-point running event taking place through the stunning Sonoran Desert in Southern Arizona. Organized by the Destination Trail Team, this challenging race features rugged terrain, high elevation mountains, and diverse flora and fauna. Participant..

The West Texas Ultra is a trail running event taking place at the Lake Meredith National Recreation Area in Fritch, Texas. Participants can choose from various distances, including 10K, 25K, 50K, and 50 miles, all set on scenic single-track dirt trails. The course features rugged terrain with signif..

The Ozark Foothills Endurance Runs is a multi-distance running event taking place from April 4 to 6, 2025, in Wildwood, Missouri. Participants can choose from various race options, including 100M, 100K, 50M, 50K, a NIGHT 50K, a 25K Ruck, a marathon, and a 25K, along with a Kids Fun Run. The event em..

The Running Retreat at Oak Mountain State Park, scheduled for April 4-6, 2025, offers an immersive experience for runners of all levels amidst Alabama's scenic trails. Participants can choose from five different runs, ranging from 5 miles to 50K, and enjoy a variety of activities including a running..

The Santa Teresa King Richard Annual Trail Run is a cherished event held at Santa Teresa County Park in San Jose, CA, designed to honor the legacy of Richard Limb. Participants can choose from various distances, including a half marathon, 10-mile, 10K, and 5K, all set against the park's stunning lan..

The Bedrock Valley Trail Runs is an exciting trail running event taking place in Hemet, California, on April 5-6, 2025. This family-friendly event features a variety of races, including a Trail Marathon, Half Marathon, 15k, and multiple 5k options, as well as a unique Stroller Trail 5k and a Kid's 1..

Big Bear Squatch North is an exciting trail running event taking place at Harriman State Park in Bear Mountain, New York. Scheduled for April 5, 2025, this challenging race features a half marathon and a 10K, both showcasing the park's rugged terrain, steep climbs, and stunning vistas. Participants..

The Hells Hills Trail Race, scheduled for April 5, 2025, in Smithville, Texas, offers a variety of challenging events for runners of all levels. Participants can choose from distances including 50 miles, 50 km, 25 km, 10 km, and a youth 1-mile trail run for children aged 12 and under. The course fea..