Miles between Billings, MT and Dekalb, IL

There are
1,186 mi
from Billings, MT to Dekalb, IL

That's the driving distance. It would take 20 hours 45 mins to go from Billings, Montana to Dekalb, Illinois.

The flight distance (direct flight from Billings, MT to Dekalb, IL) is 1,016.45 mi.

1,186 mi = 1.61 kms