Race Discovery
The Snohomish River Run Marathon, Half Marathon, 10K and 5K
The Snohomish River Run Marathon, Half Marathon, 10K and 5K logo

The Snohomish River Run Marathon, Half Marathon, 10K and 5K

Snohomish, Washington, United States View on map
Oct 11, 2026 (America/Los_Angeles local time)
Running

About this race

Snohomish River Run – Sunday, October 11th

Experience the magic of fall in the Pacific Northwest at the Snohomish River Run—where crisp autumn air, vibrant colors, and scenic river views come together for an unforgettable race day.

Set in the heart of the historic Snohomish Valley, this course takes you along the winding Snohomish River, surrounded by golden farmland, towering evergreens, and the quiet beauty that makes this region so special. Whether you’re chasing a personal best or simply soaking in the scenery, every mile offers a perfect blend of serenity and energy.

Feel the rhythm of your stride as the morning fog lifts off the river, the sun breaks through the trees, and the community comes alive to cheer you on. This is more than just a race—it’s a celebration of movement, connection, and the changing seasons.

With a fast, runner-friendly course and a welcoming, small-town atmosphere, the Snohomish River Run is perfect for seasoned racers and first-timers alike.

Come run where the river flows, the leaves turn, and the miles feel a little more meaningful.

Join us on Sunday, October 11th—and make this your most memorable run of the year.
 
 Marathon Start Time - 7:30AM

Half Marathon Start Time - 8:00AM

10K Start Time - 9:00AM

5K Start Time - 9:30AM

Pick your distance

Running

The Snohomish River Run 5k

Oct 11, 2026 5K 9:30 AM
$55.00
Open

The Snohomish River Run 10k

Oct 11, 2026 10K 9:00 AM
$65.00
Open

The Snohomish River Run Half Marathon

This is a USATF certified half marathon.

Oct 11, 2026 Half-Marathon 8:00 AM
$95.00
Open

The Snohomish River Run Marathon

This is a certified, Boston qualifier 26.2 course. There will be a 5 hour time limit and space is limited to 400 participants for the marathon.

Oct 11, 2026 Marathon 7:30 AM
$115.00
Open

Typical race-day weather

Based on 6 years of Open-Meteo archive data for this event's race dates in Snohomish, plus the 3 days either side.

Temp (°C)
Minimum temperature (race-week average) 5.2° / Maximum temperature (race-week average) 14.8°
Feels Like (°C)
Minimum feels like — heat index / wind chill (race-week average) 3.1° / Maximum feels like — heat index / wind chill (race-week average) 14.8°
Peak wind (km/h)
Strongest wind of the day (race-week average)
10.6
Precip (mm)
Precipitation over the day (race-week average)
3.1mm
Humidity
Mean relative humidity (race-week average)
86.0%
Sunrise
Sunrise at the start line on October 11, 2026 (PDT)
Sunset
Sunset at the start line on October 11, 2026 (PDT)
Daylight
Hours between sunrise and sunset on race day
11h 05m

The sun rises at 7:22 AM and sets at 6:27 PM local time (PDT) in Snohomish on October 11, 2026 — 11h 05m of daylight.

Course

No course map published yet.

The organizer hasn't released a route for this event, and we don't publish guesses. If you're the organizer, send us a GPX file and we'll draw the profile.

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Other races near Snohomish

Different organizers, within 40 miles, in the next three months

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Where this page comes from. Race details were last updated on . We re-check listings regularly and again in the week before race day.

  • Entries, prices, waves and inclusions — the event's official registration page
  • Temperature and humidity — Copernicus ERA5 reanalysis via Open-Meteo (CC BY 4.0)
  • Elevation and terrain relief — Copernicus DEM GLO-90, ESA (CC BY 4.0)
  • Comparisons and counts — Race Discovery calendar, 5 Snohomish events

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