Snoqualmie Valley Half

Snoqualmie Valley Half : Carnation, WA : June 19, 2027

The Snoqualmie Valley Half is a race weekend offering a half marathon, a 10K, and a virtual option, held at King County's Tolt MacDonald Park in Carnation, Washington. Both in-person distances are USATF certified: the half marathon is certificate WA16003RMB and the 10K is WA16002RMB.

The course is an out and back along the Snoqualmie Valley Trail. Runners leave Tolt MacDonald Park, follow a connector trail along the Tolt River, join the Snoqualmie Valley Trail at about mile 1.25, run to a turnaround point, then retrace the route to finish in the shadow of the historic big red barn. The surface is described as smooth and non-technical, and the route passes old-growth forest and farmland.

Support on course includes aid stations (half marathon approximately at miles 2.9, 5.9, 7 and 10.2 with water, Tailwind electrolyte drink and GU gels; 10K aid stations approximately at miles 2.9 and 3.3 with water and electrolyte drink) and portable restrooms at specified locations. The event is cupless; participants are asked to bring a handheld or use a small reusable folding cup available at the start. Pacers are provided by the Seattle Green Lake Running Group for a range of half marathon target times.

Parking is at Tolt MacDonald Park, Tolt Middle School, and downtown Carnation, with additional walking required if the park fills. Awards are given to top overall male, female and non-binary finishers by gun time and to age groups in five-year increments; awards must be picked up on race day. The event supports local causes including the Issaquah Food and Clothing Bank, the REI Cooperative Action Fund, and the Eastside Firefighters Benevolent Fund through the beer garden. Visit the organization's website for the most recent information.

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