Centennial100 Ultra
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Event
The Centennial 100 is a relay and ultra run along the Centennial Trail on Saturday, June 13, 2026. The full route distance is 100KM (62 miles). The event starts and finishes at Space 802, 802 1st Street, Snohomish, WA 98290. The course follows the Centennial Trail and includes themed exchange zones described as mini running parties. An after party at Space 802 will include music, a beer garden and food. Race swag includes a mesh football-style jersey.
Format and logistics
The route can be completed by teams of 6, 3, 2, or by solo participants. Organizers send out teams in groups of 10, with slower teams going first. Runner leg distances are listed as follows:
- Runner 1: 9.83 miles
- Runner 2: 9.61 miles
- Runner 3: 11.56 miles
- Runner 4: 11.56 miles
- Runner 5: 9.61 miles
- Runner 6: 9.83 miles
Cowbell distribution per finisher:
- Teams of 6: 2 cowbells each
- Teams of 3: 3 cowbells each
- Teams of 2: 4 cowbells each
- Solo participants: 7 cowbells
Registration options include slots for relay team members and captain registrations for 6-, 3-, and 2-person teams, plus a solo 100KM category. Fee examples show early and later pricing (for example, 6-person captain listed at $325.09 and $389.67). The event contact is Snohomish Running Company. Visit the organization's website for the most recent information.
