Sisu 100 PNW
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SISU 100 PNW
SISU 100 PNW on June 25, 2027 is a 100 mile self supported ultramarathon based at Camp Sheppard near Mount Rainier National Park in Enumclaw, Washington. The event is organized by Side Quest Adventures and uses a basecamp format over a weekend.
The race consists of six marked out and back mountain trails. Distances range from approximately 3 to 19 miles. Runners must complete each trail once before repeating any route; completing all six yields about 57.5 miles, after which runners repeat trails until they reach 100 miles. A single trail may not be completed more than twice in a row. Participants must check in and out at headquarters before and after every trail, and must remain on marked trails for each effort.
Camp Sheppard serves as basecamp throughout the event. Basecamp provides spaces for tents and crew, showers, flushing toilets, and medical support. Headquarters stocks water, electrolytes, snacks, and a selection of common aid station items, but there are no aid stations on the trails and runners are expected to be self sufficient once they leave camp.
Every official finisher who reaches 100 miles before the event cutoff receives a custom SISU 100 belt buckle. Required gear includes a headlamp with extra batteries, hydration pack or bottles, water filtration, food and nutrition, visibility markers, a bear bell, a phone or GPS device, backup power, and weather appropriate clothing. Visit the organization's website for the most recent information.
