The Sweaty Backyard Cox Ultra

The Sweaty Backyard Cox Ultra is an endurance running event held in Concord, North Carolina, on July 26, 2025. It features a backyard ultra format, where participants run a 4.167-mile loop every hour, with the race continuing until only one runner remains who can complete the loop within the hour. The event serves as a qualifier for the 2026 Capital Backyard Ultra, with the winner earning their entry fee for that race.

Participants must adhere to strict rules, including starting on time, completing each loop within an hour, and not leaving the course except for restroom breaks. The race emphasizes stamina, consistency, and mental toughness. Visit the organization's website for the most recent information.