Bonneville Backyard Ultra

Charleston, United States • 25 Apr 2026

The Bonneville Backyard Ultra, held near Provo, Utah at the Deer Creek Dam Trailhead, is a challenging last-person-standing ultramarathon. Runners complete a 4.167-mile out-and-back loop along the scenic Deer Creek Reservoir every hour on the hour. The course is mostly smooth and runnable, but the repetitive hourly loops, mental strain, and sleep deprivation make it tough.

Participants must start each loop on time or are eliminated, with only one runner finishing. The event emphasizes endurance and mental toughness over a set distance or time limit. It offers a unique, intense atmosphere for ultrarunners seeking to push their limits. Visit the organization's website for the most recent information.

Race information

4 mi
4.167-Mile Loop Every Hour
Visit the organization's website for the most recent information.
Trail runs nearby

The Follow the Flag 5K Trail Race takes place in Pleasant Grove, Utah, offering a patriotic running experience to honor military and first responders. The course features three distinct sections: a flat and fast first mile, a challenging uphill second mile, and a downhill final mile finishing alongs..

The Deer Creek Half Marathon, hosted by Happy Trails Racing, takes place in Midway, Utah, starting and finishing at the scenic Soldier Hollow Campground. This 13.1-mile trail run follows well-maintained dirt paths along the picturesque Deer Creek Reservoir, offering stunning lake and mountain views...

The Cirque Series race in Snowbird, Utah, is a challenging 8.6-mile trail run featuring 3,610 feet of vertical climb. Starting at the Creekside base area, the course ascends through scenic trails including Mid-Gad, Rothman Way, and Peruvian Gulch, offering expansive views of Snowbird’s Cirque, Mt. B..

Speedgoat by UTMB® is a challenging mountain trail running event held at Snowbird, a premier ski resort in Utah's Wasatch Mountains. The race offers multiple distances, including a 50K with 3450 meters of elevation gain, a 31K with 2000 meters gain, and a 10K with 500 meters gain. Participants exper..

UTMB Index

Women's Epic at Brighton is a trail running event held at the scenic Brighton Resort in Utah. Designed for adventure-seeking women of all levels, the race offers a 10K course featuring over 2,000 feet of vertical gain. Participants can hike, jog, or run the stunning trails, embracing a supportive an..

UTMB Index

The Kat'cina Mosa 100K Mountain Run is a highly challenging ultramarathon held in the Wasatch Mountains near Provo, Utah. The race features a scenic loop course with approximately 48% dirt trails, 44% dirt roads, and 8% paved surfaces. Runners face over 15,000 feet of elevation gain and loss, includ..