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 17, 2027. About 2,500 runners take part across all distances.
- Race day
- October 17, 2027
- Location
- Snohomish, WA
- Field size
- ~2,500 runners
Race details
- Date
- Sunday, October 17, 2027
- 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
Registration, course & weather
- Course profile
- Out-and-back course; Road surface; Boston qualifier
- Typical race-day weather
- about 48°F at the start, 96% humidity, 8 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo historical archive (gridded reanalysis), checked October 8, 2026)
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
- 8 min read How to Choose Your First Marathon A practical checklist for choosing a first marathon based on course, weather, cutoff, travel, field size and support.
- 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.
- 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 17, 2027.
- 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.
- What is the course like at the Snohomish River Run?
- Out-and-back course; Road surface; Boston qualifier.
- What is race-day weather usually like at the Snohomish River Run?
- about 48°F at the start, 96% humidity, 8 mph wind (based on the 2025 race day, measured near the city center rather than the exact start line; Open-Meteo historical archive (gridded reanalysis), checked October 8, 2026).
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.