Seattle

Running races in Seattle 2026: calendar, dates and registration

44 upcoming races in and around Seattle, within 70 km.

44 racesUpdated Oct 8, 2026

Choose your race and prepare for it€9.99/month

Marathons and half marathons

Upcoming 21.1 and 42.2 km races listed in this area. Check the event page before registering.

Train for this race

Upcoming races

Sat, Oct 17Dick's-A-ThonSeattle · 21.1 km
Sat, Oct 17Lake Washington HalfKirkland · 21.1 km
Sun, Oct 18Alaska Airlines Dawg DashSeattle · 5 km
Sat, Oct 24Carkeek 6- & 12- HourSeattle
Sat, Oct 24Greenlake 5KGreenlake · 5 km
Sat, Oct 24Sammamish City MarathonSammamish · 42.2 km

Calendar by month

October 20268 races

Sat, Oct 17Dick's-A-ThonSeattle · 21.1 km
Sat, Oct 17Lake Washington HalfKirkland · 21.1 km
Sun, Oct 18Alaska Airlines Dawg DashSeattle · 5 km
Sat, Oct 24Carkeek 6- & 12- HourSeattle
Sat, Oct 24Greenlake 5KGreenlake · 5 km
Sat, Oct 24Sammamish City MarathonSammamish · 42.2 km
Sat, Oct 24Wicked Fast 5K Halloween RunTacoma · 5 km
Sat, Oct 31Spooky 10K Trail RacePort Gamble · 10 km · Trail Running

November 202614 races

Sat, Nov 7Carkeek Cooler Trail RunSeattle · 5 km · Trail Running
Sat, Nov 7Grand RidgeIssaquah · Trail Running
Sat, Nov 7Grand Ridge Trail RunKing County · 21.1 km
Sun, Nov 8Run the BayUniversity Place · 21.1 km
Sun, Nov 15Kirkland Turkey TrotKirkland · 5 km
Sat, Nov 21Ravenna Refresher Trail RunSeattle · 8 km · Trail Running
Thu, Nov 26Gig Harbor Turkey TrotGig Harbor · 5 km
Thu, Nov 26Mukilteo Turkey TrotMukilteo · 5 km
Thu, Nov 26Tacoma City Turkey TrotTacoma · 5 km
Sat, Nov 282026 Seattle Ghost Marathon, Half & 50KSeattle · Trail Running
Sat, Nov 282026 Seattle Kids MarathonSeattle · 42.2 km
Sun, Nov 29Seattle Marathon 2026Seattle · 42.2 km
Sun, Nov 29UW Medicine Seattle Marathon and Half MarathonSeattle
Sun, Nov 29UW Medicine Seattle Marathon Volunteers 2026Seattle · 42.2 km

December 20268 races

Sat, Dec 5Redmond Reindeer RompRedmond · 21.1 km · Trail Running
Sat, Dec 12Christmas Rush Fun RunKent · 5 km
Sat, Dec 12PIGTAILS RUNMaple Valley · Trail Running
Sat, Dec 12Santa Runs TacomaTacoma · 21.1 km
Sun, Dec 1312Ks of ChristmasKirkland · 5 km
Sat, Dec 19Seward Solstice RunSeattle · 10 km · Trail Running
Sat, Dec 262nd Loop Out the YearLakewood · Trail Running
Sat, Dec 26A Merry Christmas Run 5K/10K/13.1 SEATTLESeattle

January 20277 races

Fri, Jan 1New Year's Day 5K & 8KAuburn
Fri, Jan 1Resolution Run 5K and Polar Bear Dive - 2027Seattle · 5 km
Sun, Jan 3Absolution RunKenmore · Trail Running
Wed, Jan 6Northshore Spring 5k for SchoolsSeattle · 5 km
Fri, Jan 8Craft Classic SeattleRedmond
Sat, Jan 16Frost Eagle Trail RunSammamish · 21.1 km · Trail Running
Sat, Jan 30Interlaken Icicle DashSeattle · 5 km · Trail Running

February 20273 races

Wed, Feb 10F Cancer 5k Run & WalkTacoma
Wed, Feb 10Run for the Gnomes Half Marathon & 5KMaple Valley
Sun, Feb 28SKECHERS Hot Chocolate Run Seattle 2027Seattle

March 20272 races

Sat, Mar 13Kirkland Shamrock RunKirkland · 5 km
Sat, Mar 13Magnuson Series: Spring Into ActionUnited States

April 20271 races

Fri, Apr 9Fall - Mud Mountain Dam Marathon & Half MarathonEnumclaw

August 20271 races

Sun, Aug 818th Lake Union 10K Run/WalkSeattle · 10 km

Questions about races in Seattle

Does the calendar cover only the city of Seattle?: It includes races in and around Seattle, within 70 km. Each event page names the starting town; check it before planning your trip. Counts reflect the listed races, rather than every race that may exist.
Where can I check registration?: Open the event page and follow the organizer or registration link when available. Check places, price, start time and rules there; a calendar listing does not mean entries are still available.
How do the distance filters work?: 5K and 10K show distances close to 5 and 10 km; half and marathon show distances close to 21.1 and 42.2 km. Trail groups mountain races. Races without a published distance appear under All.