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Half Marathons Found In Washington in October
View all ↓Half Marathons in Washington in October 2025
Find A Race is the US's favourite event listings site. Check out our list of October 2025 Half Marathons in Washington below.
Race Calendar: Half Marathons Found In October
Haunted 1M, 5K, 10K, 15K, & Half Marathon at Langus Riverfront Park, Everett, WA (40)
Everett, Washington
04 Oct 25
$27.50 - $69.90
Poulsbo Half Marathon & 10k
Poulsbo, Washington
05 Oct 25
$42.33 - $68.61
Haunted 1M, 5K, 10K, 15K, & Half Marathon at Heritage Park, Olympia, WA (41)
Olympia, Washington
11 Oct 25
$27.50 - $69.90
Girlfriends Run
Vancouver, Washington
12 Oct 25
Free - $542.00
Haunted 1M, 5K, 10K, 15K, & Half Marathon at Lowell Riverfront Park, Everett, WA (42)
Everett, Washington
18 Oct 25
$27.50 - $69.90
Lake Washington Half Marathon
Kirkland, Washington
18 Oct 25 - 21 Oct 25
$54.57 - $83.73
Haunted 1M, 5K, 10K, 15K, & Half Marathon at Chiawana Park, Pasco, WA (42)
Pasco, Washington
18 Oct 25
$27.50 - $69.90
Haunted 1M, 5K, 10K, 15K, & Half Marathon at Liberty Park, Spokane, WA (43)
Spokane, Washington
25 Oct 25
$27.50 - $69.90
Tri-Cities Marathon
Richland, Washington
26 Oct 25
$55.00 - $140.00
Showing 1-9 of 9 results