Washington · Marathon · Half Marathon · 10K
Snohomish River Run
Snohomish River Run is a marathon, half marathon, 10K and 5K event held in Snohomish, Washington. Its next confirmed date is Sunday, October 11, 2026. About 2,500 runners take part across all distances.
- Race day
- October 11, 2026
- Location
- Snohomish, WA
- Field size
- ~2,500 runners
Race details
- Date
- Sunday, October 11, 2026
- Location
- Snohomish, Washington
- Distances
- Marathon, Half Marathon, 10K, 5K
- Field size
- About 2,500 runners
- Course
- Flat and fast along the Snohomish River
- Registration
- runsignup.com
- Official website
- snohomishriverrun.com
About the Snohomish River Run
A fast, flat fall race through historic downtown Snohomish and along the Snohomish River, offering marathon, half, 10K and 5K distances popular for Boston qualifying attempts.
Rankings and notes
- Rankings and awards
- USATF-certified; Boston Marathon qualifier; flat, fast PR-friendly fall course
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Guides from the RaceRove blog
- 7 min read How to Find a 5K, 10K, Half Marathon or Marathon Near You A practical way to find running races near you: pick a distance, decide how far you'll travel, read the listing properly and confirm the details before you register.
- 9 min read How to Run a Race in All 50 States How to plan a 50-state running challenge: set your own rules, group states into trips, build a calendar around the seasons, budget for it and keep track of every finish.
- 8 min read How to Choose the Best Half Marathon for a PR, Racecation or 50-State Challenge The best half marathon depends on what you want from it. How to choose a course for a personal record, a race worth travelling for, or an efficient stop on a 50-state challenge.
- Blog All guides Planning advice for finding, choosing and travelling to races.
Snohomish River Run: common questions
- When is the Snohomish River Run?
- The next confirmed date is Sunday, October 11, 2026.
- Where is the Snohomish River Run held?
- In Snohomish, Washington.
- What distances does the Snohomish River Run offer?
- Marathon, Half Marathon, 10K and 5K.
- How many people run the Snohomish River Run?
- About 2,500 runners across all of its distances. That figure is an estimate of the field size, not an entry cap.
- How do I register for the Snohomish River Run?
- Registration is handled by the organiser at runsignup.com. Entry fees, caps and deadlines are set there.
Plan this race in RaceRove
Save it to your plan, compare it with other races, check typical race-day weather and track your 50-state progress in the interactive app.