Butterfield Backyard Ultra

Herriman, United States • 16 May 2026

Butterfield Backyard Ultra takes place at Butterfield Trailhead Regional Park in Herriman, Utah, near the Kennecott Mine and the Oquirrh Mountains. The event uses a 4.167-mile trail loop that runners complete once every hour for either 6 or 12 hours, with a final Legacy loop to crown winners. The course is 99% trail with about 512 feet of elevation gain per lap, winding through scenic Wasatch Front terrain and clearly marked by pink flags and signs. The finish line becomes a festive home base with a well-stocked aid station, local food, finishers medals, and a leather patch beanie for 50-mile finishers. Capacity is 60 (6-hour) and 120 (12-hour). Visit the organization's website for the most recent information.

Race information

50 mi
6144 m+
Backyard 12hr
25 mi
3072 m+
Backyard 6hr
Visit the organization's website for the most recent information.
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