SM
Seattle Marathon
Race Date
Nov 29, 2026
Location
Seattle, WA
Course Info
USATF CertifiedTerrain
road
Elevation Gain
0'
Net Drop/km
+1.33 m
Separation
5.3%
Also Offers
26.2M
USATF Certified Course
WA25020RMB · Seattle Half Marathon
Net uphill grade — expect a more challenging race.
Race Day Weather
5-year historical avgStart (Low)
39°
Afternoon (High)
47°
Cool conditions — dress in layers, perfect for fast times
0.2"
Precipitation
12 mph
Wind
86%
Humidity
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