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Half Marathons Found In Colorado in October

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Half Marathons in Colorado in October 2025

Find A Race is the US's favourite event listings site. Check out our list of October 2025 Half Marathons in Colorado below.

Race Calendar: Half Marathons Found In October

Colorado Springs Marathon, Half, 5K, and Kids K

Colorado Springs, Colorado
05 Oct 25
Free - $535.35

Westy Half & 5k

Westminster, Colorado
12 Oct 25
$28.50 - $54.00

Fifty States Half Marathon Club General Membership

Colorado Springs, Colorado
02 May 24 - 02 Apr 34
$91.10
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