Centennial100 Ultra
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Centennial100 Relay and Ultra - Snohomish, WA
The Centennial100 is a 100 km relay and solo run held on June 13, 2026, using the full Centennial Trail. The event begins at Space 802, 802 1st Street, Snohomish, WA 98290. The advertised total distance is 100 KM (62 miles).
Teams may register as groups of 6, 3, or 2 runners, or as solo participants covering the entire 100 km. The course is divided into exchanges along the trail; each exchange has a distinct theme and is described as a mini running party.
Runner distances in kilometers:
- 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
Each finisher receives event items and cowbells according to team size. Team cowbell distribution is described as: teams of 6 receive 2 cowbells per finisher, teams of 3 receive 3 cowbells per finisher, teams of 2 receive 4 cowbells per finisher, and solo participants receive 7 cowbells. Race swag includes a mesh football style jersey.
Registration options list early pricing at $50 per runner and later pricing at $60 per runner. Example totals shown are: 6-person team $325.09 early and $389.67 later; 3-person team $163.64 early and $195.93 later; 2-person team $109.81 early and $131.34 later; solo 100 km $109.81 early and $131.34 later. Visit the organization's website for the most recent information.
