There are
1,932 mi
from Missoula, MT to Willoughby, OH
That's the driving distance. It would take 1 day 9 hours to go from Missoula, Montana to Willoughby, Ohio.
The flight distance (direct flight from Missoula, MT to Willoughby, OH) is 1,641.30 mi.
1,932 mi = 1.61 kms