Babbitts Backyard Ultra

Flagstaff, United States • 26 Sep 2026

Babbitt's Backyard Ultra : Flagstaff, AZ

Babbitt's Backyard Ultra is a Last Person Standing footrace held near SP Crater in the Flagstaff area. The event uses a looped course of 4.167 miles per lap on a mix of dirt trails and road, with approximately 150 ft of elevation gain per loop and views of the crater and the Peaks. Each loop must be completed within an hour and competitors must return to the starting corral at the bell to begin the next loop. The event continues with successive hourly loops until only one runner completes a loop and is declared the winner. Results report each runner’s distance covered.

Rules and event logistics

Competitors receive warning signals three, two and one minute before each loop start and all must begin at the bell; late starts are not allowed. Runners may not leave the course during a loop except for restroom use, and no non-competitors are allowed on the course. Personal aid is not allowed during a loop; water will be available and each runner is allocated a 10' by 10' area near the start/finish. One crew member at a time per runner is permitted. Artificial aids, including trekking poles, are not allowed. Hand sanitizer will be available and social distancing will be observed. The event is organized as a not-for-profit; any net proceeds will be used to support local businesses or non-profit organizations. Registration closes Sep 24. Visit the organization's website for the most recent information.

Race information

4 mi
4.167 Miles
Visit the organization's website for the most recent information.
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