Endurance Grid lists 67 races in Seattle, Washington, from October 2026 to September 2027.
The Seattle race calendar is busiest in October, November, and February. It covers a range of endurance sports — you'll find races in Running, Trail Running, and Ultramarathon — so there's usually a race near you. Distances span a wide range across those sports; you'll see 5K, 10K, Half Marathon, 1 Mile, and 15K, along with other popular distances.
Weather on race day varies by time of year, so it lives where it’s accurate — each race page shows that race’s typical high, low, and rain chance from NOAA climate normals for its venue and date.
Population
741,440
as of 2023
City Elevation
40 ft
Nearest Airport
SEA
Seattle–Tacoma International Airport
Time Zone
Pacific Time
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Explore and filter upcoming endurance races in Seattle, Washington on the map below — by sport, distance, price, or month.