Marathons in Montana 2026 | Upcoming Races & Dates

There are 7 marathons in Montana scheduled for 2026. The next is the AIDSPIRIT USA Marathon in Harlowton on September 6. Montana marathons run primarily September through July.

AIDSPIRIT USA Marathon

Sun, Sep 6 · Harlowton, MT Harlowton

5K Fun Run10K Run1/2 Marathon +1

From $35 Open Closing Soon

Montana Marathon

Sun, Sep 20 · Billings, MT Billings

5K (3 Miles)10K (6 Miles)Half Marathon (13.1 Miles) +2

From $30 Open Closing Soon

Wolf Creek Canyon Relay

Sun, Oct 4 · Wolf Creek, MT Wolf Creek

8 person Relay TeamSoloMilitary Relay Team +2

From $40 Open

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

Sat, May 22 · Whitefish, MT Whitefish

The Wave 5KThe Wave 5KHalf Marathon +3

From $25 Open

Missoula Marathon Weekend of Events

Sat, Jun 26 · Missoula, MT Missoula

MISSOULA KIDS MARATHONMISSOULA KIDS MARATHONTONY BANOVICH 5K +15

From $10 Closed 8 spots left

Madison Marathon

Sat, Jul 10 · Ennis, MT Ennis

Madison Marathon (Half)Madison Marathon (Half)Madison Marathon (Full) +1

From $75 Open

Big Sky Marathon

Sun, Jul 11 · Ennis, MT Ennis

Big Sky Marathon (Half)Big Sky Marathon (Half)Big Sky Marathon (Full) +1

From $75 Closed

Marathons in Montana — 2026