Centennial 100
Saturday, June 19, 2027, first start 6:00 AM, in Snohomish (802 1st Street). Distances: 100K. Entry from $125 to $390.
- Date
- Saturday, June 19, 2027
- Start time
- 6:00 AM (earliest wave)
- Location
- 802 1st Street, Snohomish, WA 98290
- Area
- Snohomish County, Seattle
- Distances
- 100K
- Course
- Trail (dirt or single-track on at least part of the course)
- Price
- $125 to $390 plus the platform's processing fee
- Next price increase
- None published
- Registration
- Open. Opened August 24, online signup closes Saturday, June 19, 2027
How to register
Registration is on RunSignup. Pick your distance, add any extras, and you'll get a confirmation email with your bib details.
Register on RunSignup →Race website
Course and race notes
The Centennial Relay & Ultra Run isn’t just another race. It’s an unforgettable 100K adventure through the heart of the Pacific Northwest!
From the race's own listing. Check the race website for the course map and parking.
Source: RunSignup public race API, refreshed 2026-10-17. Details can change; the registration page is the final word.