Miles between Billings, MT and Grayslake, IL

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

That's the driving distance. It would take 20 hours 52 mins to go from Billings, Montana to Grayslake, Illinois.

The flight distance (direct flight from Billings, MT to Grayslake, IL) is 1,040.06 mi.

1,186 mi = 1.61 kms