Snoqualmie Valley Half Marathon

JUN
20
2026
A flat, smooth trail half marathon and 10k on the Snoqualmie Valley Trail starting at Tolt MacDonald Park on June 20, 2026. The route passes old growth forest and farmland and uses cupless aid stations with water and electrolyte drink.
Sat 20 Jun 2026
13 miles 10 kilometers

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Snoqualmie Valley Half Marathon

The Snoqualmie Valley Half Marathon takes place on June 20, 2026, at King County's Tolt MacDonald Park in Carnation, Washington. The event offers two distances.

  • Half Marathon
  • 10k

Both courses begin at Tolt MacDonald Park, wind through the park and along a scenic connector trail beside the Tolt River, then join the Snoqualmie Valley Trail for the out section before returning to finish at the park. The surface is described as smooth and non technical, and the route passes old growth forest and farmland. The half marathon is USATF certified as WA16003RMB and the 10k is USATF certified as WA16002RMB.

Aid stations provide water and electrolyte drink; half marathon stations also offer Tailwind electrolyte drink and GU gels at approximately miles 2.9, 5.9, 7, and 10.2. Portable restrooms are located at the start and finish areas and at several course locations. The event is cupless to reduce waste; participants are encouraged to use a handheld bottle, hydration pack, or a small reusable cup.

Parking is available at Tolt MacDonald Park, Tolt Middle School, and on downtown Carnation streets; when the park fills, some parking requires about a one third mile walk into the park. Pacers are provided for a range of target finish times. Awards for overall places are based on gun time and age group awards are given in five year increments and must be picked up at the race. The race lists community and sponsor support and names the Issaquah Food and Clothing Bank as a beneficiary. Visit the organization's website for the most recent information.

13 mi
Half Marathon
10 km
10k
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