Endurance Grid lists eighty-one trail running marathons across the US, from September 2026 to August 2027 across 23 states.
A marathon is a running race where athletes run 26.2 miles long (42.2 kilometers) for time.
Trail running marathons are busiest in October and April, with the most in California, Texas, Ohio, and Utah.
Endurance races happening in the next 7 days, in date order. Browse what’s coming up and sign up soon.