Miles between Billings, MT and Round Lake, IL

There are
1,182 mi
from Billings, MT to Round Lake, IL

That's the driving distance. It would take 20 hours 46 mins to go from Billings, Montana to Round Lake, Illinois.

The flight distance (direct flight from Billings, MT to Round Lake, IL) is 1,037.37 mi.

1,182 mi = 1.61 kms