Miles between Rapid City, SD and Round Lake, IL

There are
869 mi
from Rapid City, SD to Round Lake, IL

That's the driving distance. It would take 15 hours 2 mins to go from Rapid City, South Dakota to Round Lake, Illinois.

The flight distance (direct flight from Rapid City, SD to Round Lake, IL) is 770.37 mi.

869 mi = 1,399.19 kms