4 Fore 30 Infinity Backyard Ultra

The 4 Fore 30 Infinity Backyard Ultra is an endurance running event taking place in Macks Creek, MO, on November 15, 2025. This unique race follows the format of Big's Backyard Ultra, where participants must complete a 4.1667-mile loop within one hour, with the process repeating every hour until only one runner remains. The event promotes camaraderie and challenges runners to push their limits, with all profits benefiting the Kids' Harbor Child Advocacy Center.

Runners can expect race swag, food at aid stations, and a supportive atmosphere throughout the competition. Visit the organization's website for the most recent information.