L.O.S - Last One Standing

Spokane, United States • 23 May 2026

L.O.S - Last One Standing

L.O.S - Last One Standing is an endurance event held in Spokane, Washington. The competition follows a specific format where participants must complete a 4 mile route every hour on the hour. The event continues until only one runner remains to be declared the last one standing.

The course is staged on a 1.58 mile dirt track. Participants utilize this loop to complete the required 4 mile distance within each sixty minute interval. This structure emphasizes consistent pacing and mental resilience over several hours.

The event is designated as a Phase One Mission. It is designed as a training opportunity for adversity and a way for participants to test their internal strength. The format ensures that the collective group of runners restarts together at the beginning of every hour until the field narrows down to the final finisher. Visit the organization's website for the most recent information.

Race information

4 mi
Backyard Ultra Loop
Visit the organization's website for the most recent information.
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