There are
1,184 mi
from Missoula, MT to San Dimas, CA
That's the driving distance. It would take 19 hours 49 mins to go from Missoula, Montana to San Dimas, California.
The flight distance (direct flight from Missoula, MT to San Dimas, CA) is 903.10 mi.
1,184 mi = 1.61 kms