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Half Marathons Found In Idaho

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Half Marathons in Idaho 2025 - 2026

The most comprehensive list of Half Marathons in and near Idaho in 2025 - 2026. Find your perfect race!

If you're exploring half marathon races in nearby states, take a look at our range of:

Start your adventure with findarace, your one-stop destination for the most comprehensive list of runs, swims, and cycles across the US.

Race Calendar: Half Marathons Found In Idaho

35th Annual St. Patrick's Fun Run & Walk

Tuttle, Idaho
15 Mar 25
$38.10 - $59.30

Race to Robie Creek

Boise, Idaho
19 Apr 25
$78.73

Spring Dash

Coeur d'Alene, Idaho
26 Apr 25
$11.60 - $80.50

Boise River Marathon

Boise, Idaho
03 May 25
$59.69 - $112.59

YMCA Famous Idaho Potato Marathon & Fun Runs Presented by Idaho Potato Commission

Boise, Idaho
17 May 25
$38.96 - $97.68

Coeur d'Alene Marathon, Half, 10K, & 5K

Coeur d'Alene, Idaho
23 May 25 - 31 May 25
$27.50 - $122.90

Redfish Lake Lodge Memorial Weekend Run

Stanley, Idaho
24 May 25
Free - $80.50

Spirit of Magic Valley Half Marathon - 10K - 5K - Kids 1 mile runs

Twin Falls, Idaho
07 Jun 25
$22.66 - $75.56

Boise Marathon

Boise, Idaho
21 Jun 25
$38.53 - $80.85

Christmas 5K/10K/Half Marathon in July - Boise

Boise, Idaho
12 Jul 25 - 13 Jul 25
$33.60 - $49.10

25th Annual Pocatello Marathon

Pocatello, Idaho
30 Aug 25
Free - $75.20

Falls2Falls 2025

Twin Falls, Idaho
27 Sep 25
$11.60 - $69.90

Hayden Lake Marathon, Half, Quarter, & 5K

Hayden Lake, Idaho
10 Oct 25 - 19 Oct 25
$22.20 - $112.30

City of Trees Marathon

Boise, Idaho
11 Oct 25
$49.11 - $102.01

Idaho Running Day

Boise, Idaho
18 Oct 25
$38.10 - $69.90

Boise Galloway Run/Walk/Run

Boise, Idaho
01 Feb 25 - 15 Nov 25
$107.00 - $279.25
Showing 1-16 of 16 results