Half-Marathon races in Washington, United States — 2026 running calendar

Sep

04

Fall - Mud Mountain Dam Marathon & Half Marathon

Enumclaw, Washington, United States

$105.00 - $115.00

Running

Marathon Half-Marathon

Sep

06

Redmond Harvest Half Marathon

Redmond, Washington, United States

$59.00

Running

Half-Marathon

Sep

18

Ninja 5K, 10K, 13.1M at Vancouver, WA (38)

Vancouver, Washington, United States

$30.00 - $65.00

Running

5K 10K Half-Marathon

Sep

18

The Brooks Orca Half Marathon presented by Rei

Seattle, Washington, United States

$60.00 - $160.00

Running

Half-Marathon 12.9K +1

Oct

02

Run for the Gnomes Half Marathon & 5K

Maple Valley, Washington, United States

$32.00 - $80.00

Running

Half-Marathon 10K

Oct

17

The Snohomish River Run Marathon, Half Marathon, 10K and 5K

Snohomish, Washington, United States

$45.00 - $85.00

Running

5K 10K Half-Marathon Marathon

Oct

18

Girlfriends Run

Vancouver, Washington, United States

Running Walking

6.4K 10K Half-Marathon 7.2K +9

Oct

17

The Salty Half and 10K too!

Seattle, Washington, United States

Running

Half-Marathon 10K

Oct

17

Lake Washington Half Marathon

Kirkland, Washington, United States

Running

Half-Marathon

Oct

17

Haunted 5K, 10K & 13.1M at Everett, WA (42)

Everett, Washington, United States

Running

5K 10K Half-Marathon

Oct

17

Haunted 5K, 10K, & 13.1M at Pasco, WA (42)

Pasco, Washington, United States

Running

5K 10K Half-Marathon

Oct

17

Haunted 5K, 10K, 13.1M at Vancouver, WA (42)

Vancouver, Washington, United States

Running

5K 10K Half-Marathon