Endless Day Backyard Ultra
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Endless Day Backyard Ultra - Richfield, UT
The Endless Day Backyard Ultra on June 19, 2027 is a loop-based ultramarathon held in Richfield, Utah, centered on Nielson Family Park and nearby farm roads. Participants run repeated 6.55-mile loops; each loop must be completed within 90 minutes and the format continues for up to 24 hours. The official course includes about three city blocks of pavement between the park and the farm roads.
Milestone distances are awarded as runners complete laps; the overall winner is the runner who goes the furthest within the time limits, with a tie-breaker given to whoever finishes the final lap first.
Distances and common milestones:
- 10K - 1 lap (90 minutes)
- Half Marathon - 2 laps
- Marathon - 4 laps
- 50K - 5 laps
- 50 miles - 8 laps
- ~100 miles - 15 laps
The course features flat dirt roads, farm fields, and wide open skies with views of the Pahvant Range and Red Hills. Aid support includes a full aid station at the start/finish park area, an additional aid station about halfway through the loop, and two self-serve coolers for heat management. Nielson Family Park is large enough for personal tents and base camps; areas around the northern pavilion will be roped off for the start/finish.
Registration is tiered by the number of laps intended: 1-6 laps and 7-15 laps have different fees with higher rates after May 9. Registration closes on Mon, Jun 14 at 11:59 PM MT. Visit the organization's website for the most recent information.
