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Half Marathons Found In Idaho in September

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Half Marathons in Idaho in September 2025

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

Race Calendar: Half Marathons Found In September

🚀Boosted

Boise Galloway Run/Walk/Run

Boise, Idaho
01 Feb 25 - 15 Nov 25
$107.00 - $279.25
🚀Boosted

St. Luke's FitOne 5K/10K/Half Marathon

Boise, Idaho
20 Sep 25
$22.20
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Falls2Falls 2025

Twin Falls, Idaho
27 Sep 25
$12.08 - $70.27

Boise Galloway Run/Walk/Run

Boise, Idaho
01 Feb 25 - 15 Nov 25
$107.00 - $279.25

St. Luke's FitOne 5K/10K/Half Marathon

Boise, Idaho
20 Sep 25
$22.20
Showing 1-3 of 3 results