Half-Marathon races in Montana, United States — 2026 running calendar

18th Annual Canine Classic at Paws Up

Greenough, Montana, United States

22 Aug, 2026 (Sat) – 23 Aug, 2026

$40.00 - $85.00

Running

Half-Marathon 8K 3.2K

Mntwi l Nłʔay Virtual Half Marathon

Missoula, Montana, United States

01 Sep, 2026 (Tue) – 30 Sep, 2026

$48.00

Running

Half-Marathon

AIDSPIRIT USA Marathon

Harlowton, Montana, United States

06 Sep, 2026 (Sun)

$35.00 - $120.00

Running

Marathon Half-Marathon 10K 5K

Bozeman Half Marathon & 10K

Bozeman, Montana, United States

13 Sep, 2026 (Sun)

$65.00 - $118.00

Running

Half-Marathon 10K

Montana Marathon

Billings, Montana, United States

20 Sep, 2026 (Sun)

$45.00 - $115.00

Running

Marathon Half-Marathon 10K 5K

Whitefish Trail Blazer

Whitefish, Montana, United States

03 Oct, 2026 (Sat) – 04 Oct, 2026

$10.00 - $125.00

Running

Ultra 49.9K Half-Marathon 10.5K +6

Back Roads Half & 10k

Red Lodge, Montana, United States

04 Oct, 2026 (Sun)

$30.00 - $40.00

Running

Half-Marathon 10K

Just for the Helena of It

Helena, Montana, United States

18 Oct, 2026 (Sun)

$35.00 - $95.00

Running

Half-Marathon 10K 5K 1.6K +3

Sorry 'Bout That Half Marathon and Team Relay

Polson, Montana, United States

16 Jan, 2027 (Sat)

$45.00

Running

Half-Marathon

Billings Skyline Races

Billings, Montana, United States

31 May, 2026 (Sun)

Running

Half-Marathon 29.9K

Kickin Assphault Half Marathon, 10k, 1 Mile run/walk, 1/2 mile Kid's Dash

Great Falls, Montana, United States

31 May, 2026 (Sun)

Running

Half-Marathon 10K 5K 1.6K

Beaverhead Marathon Full & Half

Dillon, Montana, United States

23 May, 2026 (Sat)

Running

Marathon Half-Marathon