Babbitts Backyard Ultra
Flagstaff, United States • 27 Sep 2025
Babbitts Backyard Ultra is an endurance running event held at SP Crater in Flagstaff, AZ. Participants must complete a 4.167-mile loop every hour, with the challenge continuing until only one runner remains who can finish the loop within the time limit. The event emphasizes testing personal limits and offers a unique format where all surviving runners are tied for the lead each hour. Competitors must adhere to specific rules, including no late starts and no personal aid during loops. The event promotes health and safety measures, and proceeds support local businesses and non-profits. Visit the organization's website for the most recent information.