Bonneville Backyard Ultra

Charleston, United States • 26 Apr 2025

The Bonneville Backyard Ultra is an endurance running event held in Provo, Utah, based on the original Backyard Ultra format created by Lazarus Lake. Participants run a 4.167-mile loop every hour on the hour along a scenic course near Deer Creek Reservoir. The race continues until only one runner remains, with all others dropping out after failing to start a loop on time. The event emphasizes mental toughness and perseverance, with no set finish line or time limit. It attracts runners aiming to test their limits, whether they plan to complete a few loops or push for a longer distance. 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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