The Sweaty Backyard Cox Ultra
Concord, United States • 25 Jul 2026
The Sweaty Backyard Cox Ultra : July 25, 2026
The event is a Backyard Ultra held in Concord, North Carolina, at 3702 Sapp Rd. The course is set in the woods near that address and uses a repeating loop format.
The loop length is 4.167 miles. Each loop starts precisely one hour after the previous start. Participants receive warnings three, two, and one minute before each start and must be in the starting corral at the bell. The starting corral is sized to fit the entire field and does not change size during the event.
Loop rules require that runners complete each loop before leaving the course, except to use restrooms. No non-participants may be on the course, and no personal aid is allowed during a loop; common aid stations are permitted. Artificial aids, including trekking poles, are not allowed. A slower runner must allow passes. Each loop must be completed within one hour to be counted, including the final lap.
Timing of individual loops is optional. The winner is the last person to complete a loop; all others are recorded as DNF with results provided in terms of distance covered. If no runner completes one more loop than everyone else, there is no winner. Registration closes July 23, 2026. Visit the organization's website for the most recent information.