Endurance Grid lists one hundred sixty-six trail running half marathons across the US, from September 2026 to October 2027 across 34 states.
A half marathon is a running race where athletes run 13.1 miles long (21.1 kilometers) for time.
Trail running half marathons are busiest in October and November, with the most in California, Ohio, Texas, and North Carolina.
Endurance races happening in the next 7 days, in date order. Browse what’s coming up and sign up soon.