There are
1,615 mi
from Missoula, MT to Bourbonnais, IL
That's the driving distance. It would take 1 day 4 hours to go from Missoula, Montana to Bourbonnais, Illinois.
The flight distance (direct flight from Missoula, MT to Bourbonnais, IL) is 1,349.56 mi.
1,615 mi = 1.61 kms