Bonneville Backyard Ultra
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About the race
Bonneville Backyard Ultra is a backyard ultra event in Provo, UT, based at the Deer Creek Dam Trailhead along Deer Creek Reservoir. It follows the last-person-standing Backyard Ultra format.
Runners must complete one 4.167 miles loop every hour on the hour on an out-and-back course of about 2.08 miles each way. Participants must be inside a corral before the bell to begin the next loop; late starts and pacers are not permitted. The corral is used to track who continues each hour. Race signals include three whistles for three minutes to go, two whistles for two minutes, one whistle for one minute, and the bell to start the loop.
The route runs along the reservoir and is described as mostly smooth and very runnable. Repetition, the hourly restart pattern, and sleep loss are emphasized as factors that affect performance. The event continues until one runner remains; all other entrants receive a DNF.
Organizers may privately invite a small number of waitlisted runners to serve as standby participants on race day. Visit the organization's website for the most recent information.
