Butterfield Blitz Backyard

Herriman, United States • 15 May 2027

Butterfield Blitz Backyard

Butterfield Blitz Backyard is a backyard ultra held at Butterfield Trailhead Regional Park in Herriman City, located near the Kennecott Mine and the Oquirrh Mountains. The park is designed to provide access to the Butterfield Trail system and includes an event parking area and a finish line/tent area with ample space.

The race uses a loop course of 4.167 mile that must be completed once each hour. Events are offered in these formats:

  • 4 Hour Blitz
  • 8 Hour Blitz
  • 12 Hour Blitz

Blitz Backyards differ from standard backyard ultras by timing every loop. Placement is determined first by distance completed and then by cumulative time across completed laps. Live timing provides lap times and cumulative totals during the race. Rules note that runners must start each loop on the hour, may not start early, and must complete the loop within the hour to receive credit. Except for restrooms, runners may not leave the course or receive aid on the course once a lap begins. No artificial aid including trekking poles and no pacers are allowed.

Services and amenities include marked course flags, cones and signs, free parking, finish line snacks and electrolyte drink, locally made finisher medals, a leather patch beanie for those who complete 12 loops, and free race photos without a watermark. Each duration is capped to 60 runners to limit trail congestion. Visit the organization's website for the most recent information.

Race information

4 mi
Backyard Loop
12 Hour Blitz
4 Hour Blitz
8 Hour Blitz
Visit the organization's website for the most recent information.
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