Race Calendar in Montana, United States

Race Montana Triathlon and Duathlon 2026

Great Falls, Montana, United States

22 Aug, 2026 (Sat)

$35.00 - $100.00

Triathlon, Running, Duathlon

25.1K 6.6K 2.5K 26.2K +3

18th Annual Canine Classic at Paws Up

Greenough, Montana, United States

22 Aug, 2026 (Sat) – 23 Aug, 2026

$35.00 - $80.00

Running

Half-Marathon 8K 3.2K

Amplify! Operation Juliet 5K

Bozeman, Montana, United States

29 Aug, 2026 (Sat)

$40.00

Running

5K

Big Sky Gravel

Red Lodge, Montana, United States

30 Aug, 2026 (Sun)

$65.00 - $105.00

Gravel biking

35.4K Ultra

Mntwi l Nłʔay Virtual Half Marathon

Missoula, Montana, United States

01 Sep, 2026 (Tue) – 30 Sep, 2026

$48.00

Running

Half-Marathon

Annual Fun Run for Charities

Red Lodge, Montana, United States

05 Sep, 2026 (Sat)

Free

Running

10K 5K 3.2K

AIDSPIRIT USA Marathon

Harlowton, Montana, United States

06 Sep, 2026 (Sun)

$35.00 - $120.00

Running

Marathon Half-Marathon 10K 5K

Rim Runner Trail Trek

Billings, Montana, United States

09 Sep, 2026 (Wed)

$20.00

Running

5K

5K Brew Run & Shakeout

Bozeman, Montana, United States

11 Sep, 2026 (Fri)

$10.00

Running

5K

18th Annual Night Owl Run

Livingston, Montana, United States

11 Sep, 2026 (Fri)

$20.00 - $40.00

Running

6.5K

The Rut Mountain Runs

Big Sky, Montana, United States

11 Sep, 2026 (Fri) – 13 Sep, 2026

Free

Trail running, Running

Ultra Half-Marathon 4K 28.6K +4

Disco PBR

Anaconda, Montana, United States

12 Sep, 2026 (Sat)

$75.00

Triathlon

18K