Centennial100 Ultra
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Event overview
The 2026 Centennial100 Relay and Ultra is a 100 km event along the Centennial Trail on Saturday, June 13, 2026. The event starts and finishes at Space 802, 802 1st Street, Snohomish, WA 98290. The course can be completed by teams of six, three, two, or by solo participants. The event includes an after party at Space 802 with music, a beer garden, and food that continues until the last finisher arrives. Race swag includes a mesh football jersey. Exchanges along the route have individual themes.
Format and distances
The total distance is 100 km (62 miles). Individual runner distances for a six-person team are:
- Runner 1 - 9.83 km
- Runner 2 - 9.61 km
- Runner 3 - 11.56 km
- Runner 4 - 11.56 km
- Runner 5 - 9.61 km
- Runner 6 - 9.83 km
Cowbell distribution by entry type is specified: teams of six receive two cowbells per finisher, teams of three receive three cowbells per finisher, teams of two receive four cowbells per finisher, and solo participants receive seven cowbells.
Registration options list separate fees for relay captains and solo entries. Team member registration is free. Captain and solo fees appear in two price tiers; examples include a six-person captain fee shown as $325.09 and $389.67, a three-person captain fee shown as $163.64 and $195.93, a two-person captain fee shown as $109.81 and $131.34, and solo entry shown as $109.81 and $131.34. A route map is provided for the course. Visit the organization's website for the most recent information.
