There are
1,198 mi
from Arcadia, CA to Missoula, MT
That's the driving distance. It would take 20 hours 5 mins to go from Arcadia, California to Missoula, Montana.
The flight distance (direct flight from Arcadia, CA to Missoula, MT) is 903.55 mi.
1,198 mi = 1,928.12 kms