There are
472 mi
from Clarksville, TN to Glendale Heights, IL
That's the driving distance. It would take 9 hours to go from Clarksville, Tennessee to Glendale Heights, Illinois.
The flight distance (direct flight from Clarksville, TN to Glendale Heights, IL) is 374.42 mi.
472 mi = 759.42 kms