SISU 100

SISU 100 PNW is the Pacific Northwest's ultimate ultramarathon adventure where runners craft their own journey through six distinct mountain trails. Based out of Camp Sheppard, just outside Mount Rainier National Park, this unique race challenges participants to complete a total distance of 100 miles by selecting from an array of trail options that range in length between approximately three and nineteen miles.
The event offers unparalleled flexibility; runners can choose their own path, deciding when and how often they tackle the most challenging climbs. Some may opt for early mornings with fresh legs, while others might save steep ascents for daylight hours. The race allows you to strategically plan your route based on personal strengths and preferences, ensuring that every decision is part of a larger strategy.
Each trail loop returns to basecamp at Camp Sheppard, providing runners with the opportunity to refuel, rest, and regroup before heading back out into the wilderness. Basecamp offers essential amenities such as showers, flushing toilets, medical support, and even opportunities for brief naps or meal breaks. This setup transforms a traditional race into an endurance-focused adventure where basecamp itself plays a crucial role in your overall strategy.
SISU 100 PNW is entirely self-supported. Runners must bring their own food, hydration, gear, and navigation tools as they venture out onto the trails between visits to Camp Sheppard. No aid stations exist on the course, so preparation and planning are key components of success in this challenging event.
The race weekend kicks off with mandatory check-in procedures at camp, followed by a racer briefing that outlines all necessary details for the upcoming challenge. Throughout the three-day period, runners will navigate through diverse terrain featuring runnable forest roads, steep mountain climbs, waterfalls, ridgelines, and breathtaking alpine vistas.
Beyond the physical challenges, SISU 100 PNW is celebrated for its strong sense of community. Runners return to basecamp between trail loops where they can share stories with fellow participants, crew members, and volunteers over meals or brief rest periods. This supportive environment fosters a unique camaraderie that enhances every runner's experience.
Upon completing the 100-mile mark before the official cutoff time, all finishers receive a custom SISU 100 belt buckle as recognition of their achievement. There are no shortcuts to earning this prestigious award; runners must adhere strictly to course rules and complete the required distance without compromise.
SISU 100 PNW stands out not just for its scenic beauty and strategic freedom but also for the sense of belonging it provides within a close-knit community of trail runners, volunteers, and crew. For those seeking an unforgettable weekend in the mountains filled with adventure, challenge, and connection—look no further than SISU 100 PNW.
Registration policies include refund options up to 45 days before the event start date as well as transferability for future years should circumstances require a change. Detailed gear requirements will be sent out prior to race day ensuring all participants are fully prepared for this epic journey through some of Washington’s most stunning wilderness areas.