There are
600 mi
from Clarksville, TN to Knightdale, NC
That's the driving distance. It would take 11 hours 17 mins to go from Clarksville, Tennessee to Knightdale, North Carolina.
The flight distance (direct flight from Clarksville, TN to Knightdale, NC) is 497.77 mi.
600 mi = 965.41 kms