Bonneville Backyard Ultra

Buckle up for an epic endurance challenge at the Bonneville Backyard Ultramarathon, Utah’s premier last-person-standing race. Inspired by Lazarus Lake's original concept and steeped in tradition since its inception, this unique ultramarathon unfolds along Deer Creek Reservoir, a serene yet demanding 4.167-mile loop that runners must complete every hour on the dot.
The course is an out-and-back journey across smooth terrain, offering stunning views of the reservoir’s tranquil waters as you push through one lap after another. The simplicity of the format belies its psychological and physical demands; each hour brings a fresh start, but also relentless repetition that tests your mental fortitude and stamina like few other races can.
The race kicks off at 9:00 AM on April 25, 2026, with all participants lining up by 8:55 AM. A corral is drawn around each runner to ensure strict adherence to the hourly schedule. As you prepare for your next loop, listen closely as our signals count down—three whistles mean three minutes left; two whistles signal just over a minute remaining; and one whistle marks the final countdown before the bell rings at exactly 60-minute intervals.
The moment you fail to start a new lap on time, you’re out of contention. There are no exceptions for late starts or pacers here—only unwavering commitment to your own pace will carry you through this grueling test. The race continues until only one runner remains standing, marking the end with an unforgettable sense of accomplishment.
Whether aiming for a modest goal of completing four loops or pushing yourself towards 40 and beyond, Bonneville Backyard Ultramarathon is about discovering just how far your limits can stretch when faced with endless possibilities. It’s not merely about crossing a finish line; it's about embracing the journey without set boundaries or time constraints.
For all logistical details—gear requirements, parking arrangements, crew support information—you’ll find comprehensive guidance at www.bonnevillebackyardultra.com. Should you have additional questions, our team is always ready to assist you in any way possible.
See you on race day as we celebrate the spirit of perseverance and camaraderie among all who dare to take part.
Join us for an unforgettable adventure where every step forward reveals more about yourself than ever before.