Half Marathon · Westminster

Half Marathons in Westminster, CO

Every half marathon happening in or near Westminster, Colorado. Sorted by date with deterministic 0–100 scores so you can pick the right one for your goal.

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Half Marathon

All-Out Dog Days

Sat, Jul 11, 2026

Westminster, Colorado

road

Rolling

60PR40value45vibe

Half Marathon

Pioneer Prairie Dog Half, 10k & 5k

Sun, Aug 23, 2026

Westminster, Colorado

road

Rolling

60PR40value45vibe

Half Marathon

All-Out Fall Fest

Sat, Sep 19, 2026

Westminster, Colorado

road

Rolling

60PR40value55vibe

scenic

Half Marathon

Westy Half & 5k

Sun, Oct 11, 2026

Westminster, Colorado

road

Rolling

60PR40value45vibe

Half Marathon

All-Out Fa La La

Sat, Dec 5, 2026

Westminster, Colorado

road

Rolling

60PR40value55vibe

festive

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