Endless Day Backyard Ultra
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Endless Day Backyard Ultra - June 27, 2026
The Endless Day Backyard Ultra is a timed loop event near Richfield, UT at 555 N 600 E. Runners start a new 6.55 mile loop every 90 minutes and may continue as long as they can for up to 24 hours. Each loop must be completed within the 90 minute limit. Participants may stop at any time and still earn a distance milestone. The overall winner is the runner who goes the farthest within the event time limits; if several finish the final lap, the first to complete that lap is the winner.
Offered distances include:
- 10K
- Half Marathon
- Marathon
- 50K
- 50 Miles
- ~100 Miles
Registration is based on the number of laps a runner intends to complete. Fees are tiered: 1 to 6 laps have one fee with a higher rate after June 20, and 7 to 15 laps have a separate fee with a higher rate after June 20.
The course uses flat dirt farm roads and includes two short blocks of pavement. Aid is available at the start and finish park area and at a full station about halfway along the route, with additional self serve coolers for cooling. The park area provides space for personal tents and base camps near the northern pavilion. The event occurs close to the summer solstice in a very dry region with minimal shade, so strong sun, heat, and dry conditions are likely. Visit the organization's website for the most recent information.
