4 Fore 30 Infinity Backyard Ultra

NOV
15
2025
Read all about the 4 Fore 30 Infinity Backyard Ultra on 15 Nov 2025 in Macks Creek.
Sat 15 Nov 2025
4 Miles 880 Feet (approxi...

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About the race

4 Fore 30 Infinity Backyard Ultra, held in Macks Creek, Missouri, is a Last Man Standing ultramarathon following the Backyard Ultra format. Runners cover a 4.1667-mile loop (6.7056 km) every hour, with the field shrinking as each loop is completed. The course is a loop or out-and-back and must be finished within the hour to count; no non-competitors may be on the course, and no artificial aids are allowed.

An aid station sits near the start–finish, and lighting is provided. All race profits go to the Kids’ Harbor Child Advocacy Center. Swag is awarded; bib transfers are allowed until November 1; refunds are not offered.

Nearby lodging options exist. Visit the organization's website for the most recent information.

7 km
4 Miles 880 Feet (approximately 6.7056 Kilometers) Loop

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