There are
1,537 mi
from Missoula, MT to South Elgin, IL
That's the driving distance. It would take 1 day 2 hours to go from Missoula, Montana to South Elgin, Illinois.
The flight distance (direct flight from Missoula, MT to South Elgin, IL) is 1,306.70 mi.
1,537 mi = 1.61 kms