Seattle Marathon
Race Date
Nov 29, 2026
Location
Seattle, WA
Quick facts
- Date
- Sunday, November 29, 2026
- Location
- Seattle, Washington
- Distance
- Half marathon (13.1 mi)
- Course
- Loop Course
- Terrain
- Road
- USATF certified
- Not listed
The Experience
[image: home-summer-start-line.jpg https://static.wixstatic.com/media/81b3e6_add4473bd79147508580b5e8b5cb8b9d~mv2.jpg/v1/fill/w_199,h_77,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_avif,quality_auto/81b3e6_add4473bd79147508580b5e8b5cb8b9d~mv2.jpg]
[image: home-blue-bar.jpg https://static.wixstatic.com/media/81b3e6_0ca52141b2bf40339f33b9ab0ce6187c~mv2.jpg/v1/fill/w_82,h_6,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_avif,quality_auto/81b3e6_0ca52141b2bf40339f33b9ab0ce6187c~mv2.jpg]
REGISTER NOW (https://raceroster.com/events/2026/107529/2026-seattle-marathon-summer-5k10khalf-marathon-and-kids-fun-run) MORE INFO (https://www.seattlemarathon.org/summer-events)
[image: home-blue-bar.jpg https://static.wixstatic.com/media/81b3e6_0ca52141b2bf40339f33b9ab0ce6187c~mv2.jpg/v1/fill/w_82,h_6,al_c,q_80,usm_0.66_1.00_0.01,blur_2,enc_avif,quality_auto/81b3e6_0ca52141b2bf40339f33b9ab0ce6187c~mv2.jpg]
REGISTER NOW (https://raceroster.com/events/2026/112954/2026-uw-medicine-seattle-marathon-and-half-maratho
Course Info
Course Type
Loop Course
Terrain
road
Difficulty
Rolling Hills
Quality Score
first year
no finisher counts yet
small race — neutral
needs a few years of results
2 timing sources
no finisher data yet
no winner time yet
typical high 47°F
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
Frequently asked
When is the Seattle Marathon?
The Seattle Marathon is held on Sunday, November 29, 2026.
Where does the Seattle Marathon take place?
It takes place in Seattle, Washington.
What distances does the Seattle Marathon offer?
The half marathon (13.1 miles).
Is the Seattle Marathon course flat and good for a PR?
The Seattle Marathon is a rolling hills, loop course course.
HalfRuns editorial — independent, no paid placement.
Explore More Journeys
Can't make it to Seattle? Discover other experiences that match your running style.
Search All Races
