Running Race Calendar in Montana, United States

Montana Marathon

Billings, Montana, United States

20 Sep, 2026 (Sun)

$45.00 - $115.00

Running

Marathon Half-Marathon 10K 5K

Fierce Fab Women's Running Festival

Missoula, Montana, United States

27 Sep, 2026 (Sun)

$25.00

Running

1.6K

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

Helena Sun Run

Helena, Montana, United States

03 Oct, 2026 (Sat)

$30.00

Running

5K 1.6K

CASA 0.5K "Run"

Billings, Montana, United States

03 Oct, 2026 (Sat)

Free - $30.00

Running

0.5K +2

Back Roads Half & 10k

Red Lodge, Montana, United States

04 Oct, 2026 (Sun)

$30.00 - $40.00

Running

Half-Marathon 10K

Wolf Creek Canyon Relay

Wolf Creek, Montana, United States

04 Oct, 2026 (Sun)

$40.00

Running

45.1K +1

Le Grizz Ultramarathon & Relay

Polebridge, Montana, United States

10 Oct, 2026 (Sat)

$35.00 - $150.00

Trail running, Running

Ultra 15K 5K

Western Montana Dirt Derby

Florence, Montana, United States

10 Oct, 2026 (Sat)

$40.00

Running

3.2K 6.4K +1

5K Brew Run at Après Brewing

Bozeman, Montana, United States

14 Oct, 2026 (Wed)

$10.00

Running

5K

Harvestfest 5k

Hungry Horse, Montana, United States

17 Oct, 2026 (Sat)

$25.00

Running

5K

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