The More Miles Last One Standing Challenge
Knoxville, United States • 30 May 2026
Event overview
The More Miles Last One Standing Challenge takes place in Knoxville, MD on May 30, 2026, at 1600 Harpers Ferry Rd. This is the 7th annual running of the event. Registration closes on May 28, 2026 at 11:59 PM ET. Registrants who register by April 20, 2026 are guaranteed a t-shirt size; shirts are provided to all challengers while supplies last. The organizer states that no refunds are available. Prize money will be awarded to two top challengers; each may earn an amount equal to their total official race miles. Official race miles only count toward prizes.
Race format and distances
The event uses a backyard ultra format. Each lap, or "yard," must be completed before the hour ends. Participants who complete the yard may continue into the next hour. The last person who completes a yard within the hour is the winner. The 1-mile event runs for 24 hours, then uses a tie-breaker where each additional hour adds one mile until one participant remains.
Distances:
- 4.167 miles - official backyard yard course
- 1 mile - scaled backyard format, runs 24 hours then tie-breaker
The 4.167-mile event serves as a qualifier for the Backyard Ultra world championship. Visit the organization's website for the most recent information.