Half-Marathon races near Seattle, Washington — 2026 running calendar

Oct

10

Coffee Lovers Run 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +8

Sep

26

Oktoberfest Run 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Sep

12

National Chocolate Day: Run for Chocolates 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Aug

29

Run to Breast Cancer 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Aug

15

Cookie Run 5K/10K/13.1 Seattle

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +8

Aug

15

Run for PB& J 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Aug

01

Run Like a Viking Virtual Challenge 5K/10K/Half Marathon

Seattle, Washington, United States

Running

8K 16.1K Half-Marathon

Jul

25

Run for Donuts 5K/10K/13.1 Seattle

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +8

Jul

25

Run for Coffee Lovers 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Jul

04

July 4th Run 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Jul

04

Run for Chocolate 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +2

Jun

20

Sloth Run 5K/10K/13.1 Seattle

Seattle, Washington, United States

Running

5K 10K Half-Marathon 1.6K +8