Miles between Billings, MT and Montgomery, IL

There are
1,217 mi
from Billings, MT to Montgomery, IL

That's the driving distance. It would take 21 hours 17 mins to go from Billings, Montana to Montgomery, Illinois.

The flight distance (direct flight from Billings, MT to Montgomery, IL) is 1,040.92 mi.

1,217 mi = 1.61 kms