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Half Marathons Found In Idaho in Fall

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Half Marathons in Idaho in Fall 2025

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

Race Calendar: Half Marathons Found In Fall

🚀Boosted

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

Boise, Idaho
20 Sep 25
$22.20
🚀Boosted

Boise Galloway Run/Walk/Run

Boise, Idaho
01 Feb 25 - 15 Nov 25
$107.00 - $279.25
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Falls2Falls 2025

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

City of Trees Marathon

Boise, Idaho
11 Oct 25
$49.11 - $102.01

Hayden Lake Marathon, Half, Quarter, & 5K

Hayden Lake, Idaho
11 Oct 25
$22.20 - $112.30

Idaho Running Day

Boise, Idaho
18 Oct 25
$38.10 - $69.90

Halloween Hustle Half Marathon, 10K, & 5K

Coeur d'Alene, Idaho
26 Oct 25
$22.20 - $80.50

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 1-7 of 7 results