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Triathlon Calendar near Downtown Seattle 2025-2026

Explore the top triathlons near Downtown Seattle for 2025-2026! We've gathered 78 exciting races in the area. Check out our detailed list below to find your next local race.

November 2025
Nov
1
Saturday

Half Marathon at Langus Riverfront Park

13 mi
Nov
8
Saturday

Grand Ridge Trail Run

Trail Run 5 mi 13 mi 26 mi 50 km
Nov
9
Sunday

Run the Bay

5 km 10 km 13 mi
Nov
15
Saturday

Super Hero 5k - Seattle

5 km
Nov
16
Sunday

Kirkland Turkey Trot

5 km 10 km
Nov
22
Saturday

Tacky Turkey Sweater 5k

5 km
Nov
22
Saturday

Carnation Turkey Trot

5 km
Nov
27
Thursday

Woodinville Turkey Trot

5 km
Nov
27
Thursday

Tacoma City Turkey Trot

5 km
Nov
27
Thursday

Gig Harbor Turkey Trot

5 km
Nov
27
Thursday

Maple Valley Turkey Trot 5K

5 km
Nov
29
Saturday

Seattle Ghost Marathon

13 mi 26 mi 50 km
Nov
30
Sunday

Seattle Marathon

13 mi 26 mi
December 2025
Dec
6
Saturday

The Electric Cookie Run

5 km 10 km
Dec
6
Saturday

Half Marathon at Langus Riverfront Park

13 mi
Dec
13
Saturday

Pigtails Run

Trail Run 13 mi 26 mi 50 km
Dec
13
Saturday

Santa Runs Tacoma

5 km 10 km 13 mi
Dec
14
Sunday

12ks of Christmas - Kirkland, WA

12 km
Dec
20
Saturday

Sleigh That 5K

5 km
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