There are
392 mi
from Clarksville, TN to Hickory Hills, IL
That's the driving distance. It would take 8 hours 27 mins to go from Clarksville, Tennessee to Hickory Hills, Illinois.
The flight distance (direct flight from Clarksville, TN to Hickory Hills, IL) is 359.86 mi.
392 mi = 631.49 kms