Marathons in Seattle, Washington
1 upcoming race is listed in Seattle, including 1 marathon and 1 half marathon. The next is UW Medicine Seattle Marathon & Half Marathon on November 29, 2026.
November has the most races. Race pages link the official source where we have one. Confirm dates and prices with the organizer before you register.
1
Races listed
1
Marathons
November
Busiest month
16 Jun
Last updated
| Date | Race | Distances | From |
|---|---|---|---|
| 29 Nov 2026 29Nov 26 | UW Medicine Seattle Marathon & Half Marathon | 42.2K · 21.1K · Kids | $105–$215 |
Around Seattle
This is the most detailed level of the directory. Widen the search to the surrounding region.
Common questions
When is the next race in Seattle?
UW Medicine Seattle Marathon & Half Marathon on November 29, 2026. The table above lists every upcoming race in date order.
Which months are busiest in Seattle?
November (1), counting every upcoming race listed in Seattle.
Which distances can I run in Seattle?
The listed races include 1 marathon and 1 half marathon. Many events offer more than one distance on the same day.
How do I confirm a race’s details?
Open the race page and check its provenance ledger, which shows where each fact came from. Then confirm the date, price and entry rules with the organizer before you register or book travel.
Spotted something wrong on this page?
Dates and prices move · tell us and we check the organizer’s source