There are
451 mi
from Clarksville, TN to Palos Hills, IL
That's the driving distance. It would take 8 hours 26 mins to go from Clarksville, Tennessee to Palos Hills, Illinois.
The flight distance (direct flight from Clarksville, TN to Palos Hills, IL) is 357.84 mi.
451 mi = 726.60 kms