There are
718 mi
from Clarksville, TN to Hyattsville, MD
That's the driving distance. It would take 13 hours 24 mins to go from Clarksville, Tennessee to Hyattsville, Maryland.
The flight distance (direct flight from Clarksville, TN to Hyattsville, MD) is 592.77 mi.
718 mi = 1,155.67 kms