Ultras in Montana 2026 | Upcoming Races & Dates

There are 6 ultras in Montana scheduled for 2026. The next is the 44th OSCR in Seeley Lake on January 30. Montana ultras run primarily January through October.

44th OSCR

Sat, Jan 30 · Seeley Lake, MT Seeley Lake

5K youth ski race10K nordic ski race20K Skate nordic ski race +2

From $30 Open

Climate Ride Desert Trifecta: Death Valley, Valley of Fire, and Red Rock Canyon

Thu, Mar 4 · Missoula, MT Missoula

Climate Ride Desert Trifecta

Closed

175-mile Pioneer Crossings Relay Race

Fri, Jul 9 · Twin Bridges to Virginia City, MT Twin Bridges to Virginia City

StandardStandardUltra +3

From $110 Open

Big Sky Marathon

Sun, Jul 11 · Ennis, MT Ennis

Big Sky Marathon (Half)Big Sky Marathon (Half)Big Sky Marathon (Full) +2

From $75 Open

Madison Triathlon

Sat, Jul 24 · Ennis, MT Ennis

Madison Triathlon - Olympic

From $100 Closed

Le Grizz Ultramarathon & Relay

Sat, Oct 9 · Polebridge, MT Polebridge

5K Run5K Run15K Run +5

From $35 Closed

Ultras in Montana — 2026