Trail Running Calendar United States 2025-2026

The River of No Return Endurance Runs is a challenging ultramarathon event held in Challis, Idaho, featuring distances of 32K, 55K, and 108K. Participants traverse rugged terrain, including mountain climbs over 9,000 feet, scenic ATV trails, dirt roads, and single-track trails, offering stunning vie..

The Ansonia Six Hour Trail Run is a challenging endurance event held at the Ansonia Nature Center in Ansonia, Connecticut. Participants run counter-clockwise loops of approximately 1.9 miles on moderately technical singletrack trails featuring about 170 feet of elevation gain per loop. The course of..

The Barr Lake Trail Race, held annually in Brighton, Colorado, offers a scenic and fast trail running experience around Barr Lake State Park. Celebrating its sixth year, the event features multiple distances: 50K, 30K, half marathon, 15K, and 5K, all on flat, dirt terrain with minimal elevation gain..

The Cool Moon 100 Mile Endurance Run is a challenging ultramarathon set in the scenic landscapes of Northern California. Scheduled for June 14, 2025, this event features a unique course comprising two loops: a 13.5-mile North loop and an 11.5-mile South loop, totaling 100 miles. Runners have a gener..

The Marys Peak Trail Run is a challenging and scenic race held in the Oregon Coast Range, celebrating its 10th anniversary in 2024. Participants can choose from 25K, 50K, or 50-mile distances, with the event featuring rugged terrain, dense forests, and stunning views of the Cascades and Pacific Ocea..

The FARM Barn Burner is an exciting running event taking place in Birmingham, AL, featuring both a half marathon and a 10K race. Participants will enjoy scenic trails, including the Dunnavant Valley Greenway and various nature paths, with elevation gains of approximately 2000 feet for the half marat..

The Buck Creek Streak 5K Trail Run is an annual event held at the Carolina Foothills Resort, combining fun, beautiful trails, and good food. This clothing-optional race offers participants the choice between a 5K and a 7.3K course, with the latter also entering runners into the 5K competition. The e..

The Holcomb Valley Trail Run is an annual event held in Big Bear Lake, California, featuring three race distances: 33 miles, 14 miles, and 7 miles. Participants run along the scenic Pacific Crest Trail and forest roads through historic Holcomb Valley, known for its gold rush history. The race promot..

Lowells Loop is a unique running event held in Pleasant Hill, OR, featuring a "Last Man Standing" format. Participants run a 5-mile loop within a set time of 60 minutes to qualify for subsequent laps, with each lap starting on the hour. The event continues until only one runner remains or all others..

Smith's Knob Scramble is an 8-mile trail race held in Montoursville, Pennsylvania, featuring a challenging course along the Loyalsock Trail that ascends the steep Smith's Knob. The event also offers a new 4.5-mile "Half Scramble" loop, ideal for beginners, which includes a mix of single track and lo..

The Old Gabe event, held in Bozeman, MT, features challenging 30K and 50K trail runs, honoring Jim Bridger, a notable figure of the wild west. With a cap of 130 participants, all finishers receive an Old Gabe hat, and top male and female 50K runners earn special awards. The course includes significa..

The Norbrook Farm Brewery Trail Festival, held at Norbrook Farm Brewery in Colebrook, Connecticut, is a vibrant all-day event featuring trail running and mountain biking. Participants can choose from a 4-hour run, 10K, 5K, run/bike duathlon, and various mountain bike races on challenging 5-mile loop..

The Last Stand Army Backyard Ultra is a challenging endurance race held in Midlothian, Virginia, on Flag Day, June 14, 2025, to honor the 250th Birthday of the U.S. Army. Participants run a 4.167-mile loop every hour on the hour, continuing until only one runner remains to complete a final loop.The..

The Q50 Races Run to the Hills is a trail running event held at Bogue Chitto State Park in Franklinton, Louisiana. Scheduled for June 14, 2025, it offers two race distances: a 5-mile single loop and a 10-mile course consisting of two loops on scenic dirt trails with small hills but no technical chal..

The YMCA Race Weekend is a vibrant two-day event scheduled for June 14-15, 2025, at Green Lakes State Park in Fayetteville, NY. Participants can engage in various activities, including a Sprint Triathlon, Duathlon, Aquabike, Aqua Run, and an 8K Trail Race. This event not only promotes fitness and co..

The Wicked Root 50K is an annual ultramarathon held over two days in Lowell, North Carolina, celebrating its 10th year. The event features a challenging 10-mile loop course within a park, with a total elevation gain of 1,400 feet per loop. Participants can also choose to run a 50K on either Saturday..

The PRR Summer Series 10K - Headwaters is a fun and engaging running event taking place in Moscow, ID. This 10K race, which is slightly over 5 miles, features a scenic route on Moscow Mountain, known for its challenging terrain with approximately 700 feet of elevation gain. Participants can enjoy a..

The Little Mountain Endurance Challenge is a versatile outdoor race event held in Franklin, Idaho, featuring 5K, 10K, 6-hour, and 12-hour challenges. Participants can enjoy scenic views of mountains and valleys while tackling courses that include hill climbs and multiple ascents of Little Mountain...

The Night Train 50K and Half Marathon is an annual nighttime trail running event held at High Bridge Trail State Park in Farmville, Virginia. The race features three distances: a 50K, a half marathon, and a sunset 5K, all following a historic rail trail through scenic countryside and small towns. Th..

The White Salmon Backyard Half, held annually in White Salmon, Washington, features a half marathon and a 4-mile race starting and finishing at Rheingarten Park. Both races begin on a scenic lollipop course with challenging climbs and descents, offering stunning views of the Columbia River. The half..