The Sweaty Backyard Cox Ultra

Concord, United States • 25 Jul 2026

Event Format and Rules

The Sweaty Backyard Cox Ultra is a Backyard Ultra event. The competition continues until only one runner remains. The winner is the last person to complete a loop. All other participants receive a DNF result. The race has no set end time.

The course is a loop of exactly 4.167 miles. A new loop starts precisely one hour after the previous one began. To continue, a runner must finish each loop within the one-hour time limit.

Participants must be in the starting corral at the sound of the bell to begin each loop; late starts are not permitted. Runners may not leave the course until a loop is finished, except to use restrooms. No personal aid is allowed during a loop, but common aid stations are provided.

Location

The event takes place in Concord, North Carolina. The start and course are located at 3702 SAPP RD.

Registration

Registration closes on Thursday, July 23. Visit the organization's website for the most recent information.

Race information

4 mi
Loop
Backyard Ultra
Visit the organization's website for the most recent information.
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