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

Sep

20

Montana Marathon

Billings, Montana, United States

$45.00 - $135.00

Running

Marathon Half-Marathon 10K 5K

Oct

03

Whitefish Trail Blazer

Whitefish, Montana, United States

$10.00 - $150.00

Running

Ultra 49.9K Half-Marathon 10.5K +6

Oct

04

Back Roads Half & 10k

Red Lodge, Montana, United States

$55.00 - $65.00

Running

Half-Marathon 10K

Oct

18

Just for the Helena of It

Helena, Montana, United States

$35.00 - $95.00

Running

Half-Marathon 10K 5K 1.6K +3

Jan

16

Sorry 'Bout That Half Marathon and Team Relay

Polson, Montana, United States

$60.00

Running

Half-Marathon

Feb

27

Snow Joke Half Marathon

Seeley Lake, Montana, United States

$35.00

Running

Half-Marathon

Mar

20

Lucky Hare Half Marathon & 9K

Kalispell, Montana, United States

$45.00 - $75.00

Running

Half-Marathon 9.3K

May

22

Whitefish Marathon, Half Marathon & 5K Presented by Hammer Nutrition

Whitefish, Montana, United States

$35.00 - $90.00

Running

Marathon Half-Marathon 5K

Jun

26

Missoula Marathon Weekend of Events

Missoula, Montana, United States

$10.00 - $99.00

Running Wheelchair

5K 1.9K Marathon Half-Marathon +4

Jul

10

Yellowstone Park Trail Races

West Yellowstone, Montana, United States

$45.00 - $80.00

Trail running Running

Marathon Half-Marathon Ultra 25K +2

Jul

10

Madison Marathon

Ennis, Montana, United States

$80.00 - $100.00

Running

Marathon Half-Marathon

Jul

11

Big Sky Marathon

Ennis, Montana, United States

$80.00 - $100.00

Running

Marathon Half-Marathon