Half-Marathon races in Washington, United States — 2026 running calendar
184 events found
May
02
Cinco De Mayo Run 5K/10K/13.1 SEATTLE
Seattle, Washington, United States
Running
5K
10K
Half-Marathon
1.6K
+2
May
02
Sunrise Marathon 5K/10K/13.1 SEATTLE
Seattle, Washington, United States
Running
5K
10K
Half-Marathon
1.6K
+2
Feb
15
Three Lakes Triathlons and Kings Market San Juan Island Runs
Friday Harbor, Washington, United States
Triathlon
Running
Ultra
25.3K
Half-Marathon
10K
+5
Feb
01
Race Through Washington 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!
Tacoma, Washington, United States
$20.00
Running
1.6K
5K
10K
Half-Marathon
+1
Cinco De Mayo Run 5K/10K/13.1 SEATTLE
Seattle, Washington, United States
May 2, 2026 (Sat)
Running
5K
10K
Half-Marathon
1.6K
+2
Sunrise Marathon 5K/10K/13.1 SEATTLE
Seattle, Washington, United States
May 2, 2026 (Sat)
Running
5K
10K
Half-Marathon
1.6K
+2
Three Lakes Triathlons and Kings Market San Juan Island Runs
Friday Harbor, Washington, United States
Feb 15, 2026 (Sun)
– Jun 20, 2026
Triathlon, Running
Ultra
25.3K
Half-Marathon
10K
+5
Race Through Washington 1M, 5K, 10K, 13.1, 26.2 - Now Only $20!
Tacoma, Washington, United States
Feb 1, 2026 (Sun)
– Dec 31, 2026
$20.00
Running
1.6K
5K
10K
Half-Marathon
+1