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Half Marathons in Montana

  1. Races by State
  2. Montana
  3. Half Marathon

Browse Half Marathon races in Montana, including upcoming races and races up to one year past their event date. Sort by highest rating or number of reviews to elevate the most popular races.

For each Half Marathon race, you’ll find key details, finisher ratings and reviews, photos, videos, related articles, race-day weather data and a link to register.

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Showing Half Marathons in Montana

Big Sky State Games Road Races
Laurel, MT | Jul 18, 2026

OVERALL

(1 rating)

1
Bob Marshall Trail 50K, 25K & 10K
Seeley Lake, MT | Jul 18, 2026

OVERALL

(0 ratings)

0
Divide Trail Race
Butte, MT | Jul 25, 2026

OVERALL

(0 ratings)

0
The Divide 50K & 25K June
Butte, MT | Jul 25, 2026

OVERALL

(1 rating)

4
HURL Elkhorn Endurance Runs
Clancy, MT | Aug 1, 2026

OVERALL

(0 ratings)

0
Yellowstone Trail Marathon & Trail Races
West Yellowstone, MT | Aug 1, 2026

OVERALL

(0 ratings)

0
Prospector’s 50K & 30K
Silver Gate, MT | Aug 8–9, 2026

OVERALL

(0 ratings)

0
Smelter City Scamper
Anaconda, MT | Aug 8, 2026

OVERALL

(0 ratings)

0
Wicked Fast Marathon & Half Marathon Montana (fka Jack & Jill Montana)
Livingston, MT | Aug 15, 2026

OVERALL

(3 ratings)

3
Nitty Gritty Off Road Race
Red Lodge, MT | Aug 16, 2026

OVERALL

(2 ratings)

2
Canine Classic at The Resort at Paws Up
Greenough, MT | Aug 23, 2026

OVERALL

(0 ratings)

0
Mntwi l Nłʔay Half Marathon (virtual)
Missoula, MT | Sep 1, 2026

OVERALL

(0 ratings)

0
AIDSPIRIT USA Marathon
Harlowton, MT | Sep 6, 2026

OVERALL

(0 ratings)

0
The Rut Mountain Runs
Big Sky, MT | Sep 11–13, 2026

OVERALL

(1 rating)

5
Bozeman Half Marathon & 10K
Bozeman, MT | Sep 13, 2026

OVERALL

(16 ratings)

4.1
Montana Marathon
Billings, MT | Sep 20, 2026

OVERALL

(23 ratings)

4.6
Hiawatha Fall Trail Run (ID)
Taft, MT | Sep 26, 2026

OVERALL

(1 rating)

5
Mainly Marathons Center of the Nation Series Day 6 (MT)
Baker, MT | Oct 3, 2026

OVERALL

(2 ratings)

4
Whitefish Trail Blazer
Whitefish, MT | Oct 3–4, 2026

OVERALL

(0 ratings)

0
City to Sky Trail Races
Missoula, MT | Oct 18, 2026

OVERALL

(0 ratings)

0

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