Bonneville Backyard Ultra

Charleston, United States • 26 Apr 2025

The Bonneville Backyard Ultra is Utah's original last man standing ultramarathon, taking place at the Deer Creek Dam Trailhead. Participants must complete a 4.167-mile loop every hour to remain in the race. The course features an out-and-back design, with approximately 2.08 miles in each direction.

The event emphasizes personal endurance, encouraging runners to discover and push their limits. The race includes a unique starting procedure with a series of whistles and a bell to signal the beginning of each loop. For more details, participants can visit the official website. 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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