Last Mamba Standing

SEP
26
2026
Experience a pure test of endurance in this official Backyard Ultra where runners complete 4.167 mile loops every hour until only one participant remains standing.
Sat 26 Sep 2026
7 kilometers

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Last Mamba Standing

Last Mamba Standing is an official Backyard Ultra event located on private land in Eads, Tennessee. The race follows the international format where participants must complete a loop of exactly 4.167 miles (6.7056 km) every hour, on the hour. The event is open-ended with no predetermined finishing distance or time, continuing until only one runner remains.

The competition follows strict official rules. Participants must be inside the starting corral when the bell rings for each new yard. A warning is provided three minutes, two minutes, and one minute before each start. Every loop must be finished in under one hour to count toward the runner's total. Runners are not permitted to leave the course during a loop except for restroom breaks, and no personal aid or trekking poles are allowed while on the course.

The event structure includes:

  • Last Man Standing (Backyard Ultra format)

The race environment features primitive camping available on-site starting the Friday evening before the event. The start/finish area is located at 675 Pisgah Rd, identified by white picket fences and a gravel road. While the organizers provide water and basic trail snacks such as cookies and crackers, participants are responsible for bringing their own specific nutrition, gear, and supplies. There are no traditional aid stations on the course.

Recognition is awarded to all participants who complete at least one loop in the form of a finisher medal and a race shirt. However, there is only one champion award for the final runner who successfully completes one more full yard than all other competitors. Visit the organization's website for the most recent information.

7 km
Backyard Ultra
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