L.O.S - Last One Standing

MAY

23

2026

L.O.S is a timed endurance test near Spokane that challenges runners to complete repeated 4 mile loops each hour until only one participant remains. Framed as a Phase One Mission, it tests resilience with aid station support and crew access.

Sat 23 May 2026

Spokane, Washington

Website Registration

4 Mile Loop

Always double-check with the organizer's website! This page may contain affiliate links.

Event overview

L.O.S is a timed endurance event on Saturday, May 23, 2026, held near Spokane, WA (12099-11601 West 7-Mile Road). The organizer frames the event as a Phase One Mission focusing on training for adversity and testing resilience. Registration for the event closes May 20.

The format has runners complete repeated loops until a single competitor remains. Runners complete a 4 mile route on each circuit, repeated hourly until only the last participant continues.

Course and logistics

The course is built from a 1.58 mile loop at Reardan Cross Country Track, using one course marker as a turnaround point to form a 4 mile loop. One fully stocked aid station is located at the start/finish in the main parking lot. The aid station offers food and drink, but runners are encouraged to be self-sufficient.

Crew access is allowed with tents in a designated section of the parking lot as authorized by the trail owners. Required gear listed by the organizer includes a head lamp, running gear, food, water, and electrolytes. Race check-in is held at the race location on the day before and the day of the event, and a pre-race briefing takes place at the start/finish. Visit the organization's website for the most recent information.

4 mi

4 Mile Loop