Explore the best trail runs in the United States for 2026-2027! Our updated list features 3959 exciting races across the country. Find your next race in the United States below and join the running community at these great events!
A looped endurance event in Birmingham's Railroad Park where runners repeat an approximately 0.78 mile circuit with progressively shorter cutoffs until they stop or miss a cutoff. Awards go to the last three men and women and a portion of f..
A memorial stair-climb in San Diego to honor the 403 emergency responders lost on September 11, 2001, raising funds for FirefighterAid with a 2026 goal of $120,000.
An untimed adventure run in the Loess Hills at Glenwood Lake Park on September 5, 2026, featuring switchback trails, wooded sections, creek crossings and natural obstacles. Finishers receive a "Conqueror of the Loess" medallion.
An ultramarathon in Pinellas County, Florida measured at just over 46 miles, running along the Pinellas Trail from St. Petersburg toward Tarpon Springs and returning toward Dunedin.
A women only back yard ultra on a 4.167 mile loop run every hour on the hour in Phoenix NY. Forest trails, open field sections and night running combine with common ultra distance milestones and proceeds benefiting local women's shelters.
A four-part community trail series with three morning gatherings and a final sunset event in Marietta and Lancaster County. Participants choose their own distance, share food and hydration, and may register per event or buy a multi event pa..
Night trail challenge where runners complete a 5K per hour for six hours; finish each lap on time to remain in the event. Awards include patches, an OUTLAST medal for six laps, a national leaderboard, and championship opportunities with cas..
A backyard ultra at Lake Rebecca on September 5, 2026, where runners repeat a *4.167-mile* loop each hour until they cannot finish within the hour. The course mixes gravel, asphalt, and trail and includes a sauna and swim option.
Timed 3 hour, 6 hour and 12 hour events on a flat paved 8.34 mile out and back on the Thermal Belt Rail Trail in Forest City NC. Aid stations and awards include a 50 mile belt buckle for 12 hour finishers.
A 50K trail ultramarathon near Stony Creek, NY on September 6, 2026, with a lollipop course from Harrisburg Lake through Wilcox Lake Wild Forest, multiple aid stations, and about 3,028 feet of elevation change.
Trail races on dirt in Chattanooga including a 1/2 marathon and a shorter race; courses include significant climbing and set cutoff times, with registration closing Sep 5, 2026.