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Butterfield Backyard Ultra

Herriman, United States • 16 May 2026

The Butterfield Backyard Ultra, hosted by Happy Trails Racing, takes place at Butterfield Trailhead Regional Park in Herriman, Utah, near the Oquirrh Mountains. This unique event features a 4.167-mile loop course with 512 feet of elevation gain, mostly on scenic trails. Runners complete one loop every hour for either 6 or 12 hours, with the challenge of finishing each loop within the hour to continue.

The race emphasizes camaraderie, mental toughness, and strategy, with a festive finish line atmosphere including food and space for friends and family. Awards include finisher medals and custom leather patch beanies for those completing 50 miles. The event blends a backyard ultra format with a timed "Legacy Loop" to determine winners. Visit the organization's website for the most recent information.

United States Utah Herriman

Race information

Website Registration
12 hr
6144 m+
Backyard 12hr
6 hr
3072 m+
Backyard 6hr
Visit the organization's website for the most recent information.
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