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

Dec

26

Holiday 5K, 10K, & 13.1M at Camas, WA (52)

Camas, Washington, United States

$30.00 - $65.00

Running

5K 10K Half-Marathon

Dec

26

A Merry Christmas Run 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Dec

26

New Year's Run 5K/10K/13.1 Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Dec

31

Last Chance Marathon and Half Marathon

Bellingham, Washington, United States

$60.00

Running

Marathon Half-Marathon

Jan

16

Mlk Jr. Freedom Run 5K/10K/13.1 Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Jan

30

Coffee Lover Run Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Feb

05

Richland RunFest

Richland, Washington, United States

$20.00 - $60.00

Running

Half-Marathon 10K 5K +2

Feb

13

Valentine's Day Run 5K/10K/13.1 Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Feb

13

Woolley Trail Runs

Sedro Woolley, Washington, United States

$65.00

Running

Ultra Marathon Half-Marathon

Feb

13

Run for Chocolate 5k/10k/13.1 Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Feb

27

Run Together Against Breast Cancer Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Feb

27

Run For Mental Health Seattle

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2