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Marathon Calendar near South Lake Union 2025-2026

Explore the top marathons near South Lake Union for 2025-2026! We've gathered 18 exciting races in the area. Check out our detailed list below to find your next local race.

November 2025
Nov
28
Fr

Grateful Runners Turkeys Revenge
Half Marathon Marathon 50 km
Nov
29
Sa

Seattle Ghost Marathon
Half Marathon Marathon 50 km
Nov
30
Su

Seattle Marathon
Half Marathon Marathon
December 2025
Dec
13
Sa

Pigtails Run
Trail Run Half Marathon Marathon 50 km
January 2026
Jan
18
Su

Birthday Run - Seattle
13 mi 26 mi
February 2026
Feb
8
Su

West Seattle Beach Run - Fat Ass
Trail Run Half Marathon Marathon 50 km
March 2026
Mar
7
Sa

US Road Running - Everett
5 km 10 km 13 mi 26 mi
Mar
21
Sa

US Road Running - Everett
5 km 10 km 13 mi 26 mi
Mar
28
Sa

Spring Run for Fun @ Bridle Trails
Trail Run 5 km 10 km Half Marathon Marathon
Mar
29
Su

Redmond Marathon
Trail Run 26 mi
April 2026
Apr
4
Sa

US Road Running - Everett
5 km 10 km 13 mi 26 mi
Apr
18
Sa

US Road Running - Everett
5 km 10 km 13 mi 26 mi
May 2026
May
2-3
Sa - Su

Tacoma City Marathon
5 km 10 km Half Marathon Marathon
July 2026
Jul
25-26
Sa - Su

Jack & Jill Downhill Marathon
Half Marathon Marathon
September 2026
Sep
12
Sa

Cascade Express Marathon
Trail Run 13 mi 26 mi
Sep
12
Sa

Beat the Blerch
Trail Run 5 km 10 km Half Marathon Marathon
October 2026
Oct
11
Su

Snohomish River Run
5 km 10 km Half Marathon Marathon
November 2026
Nov
7
Sa

Grand Ridge Trail Run
Trail Run 5 mi Half Marathon Marathon 50 km