Running Race Calendar in Washington, United States

Haunted 5K, 10K & 13.1M at Camas, WA (43)

Camas, Washington, United States

24 Oct, 2026 (Sat)

$30.00 - $65.00

Running

5K 10K Half-Marathon

Greenlake 5K and Wellness Festival

Seattle, Washington, United States

24 Oct, 2026 (Sat)

$35.00 - $45.00

Running

5K

West Seattle Monster Dash 2026

Seattle, Washington, United States

24 Oct, 2026 (Sat)

$35.00

Running

5K

Run Scared

Seattle, Washington, United States

25 Oct, 2026 (Sun)

$40.00 - $50.00

Running

10K 5K 4K

Tri-Cities Marathon

Richland, Washington, United States

25 Oct, 2026 (Sun)

$75.00 - $180.00

Running

Marathon Half-Marathon

Captain Jack's Treasure Run

Redmond, Washington, United States

25 Oct, 2026 (Sun)

$45.00 - $55.00

Running

5K 8K 12K

Ten Trails Active Club Trot n' Treat Relay Scramble

Black Diamond, Washington, United States

28 Oct, 2026 (Wed)

Free

Running

11K

Wicked Fast 5K & 10K

Tacoma, Washington, United States

31 Oct, 2026 (Sat)

$15.00 - $52.50

Running

10K 5K 1K

Halloween Trick or Trot Run 5K/10K/13.1 SEATTLE

Seattle, Washington, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Trick or Treat 5k

Seattle, Washington, United States

31 Oct, 2026 (Sat)

Free - $33.00

Running

5K

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

Seattle, Washington, United States

31 Oct, 2026 (Sat)

$30.00 - $45.00

Running

5K 10K Half-Marathon 1.6K +2

Cougar Mountain Trail Run Series (October)

Bellevue, Washington, United States

31 Oct, 2026 (Sat)

$40.00 - $100.00

Trail running

Ultra 31.4K 12.2K 5K