There are
854 mi
from Clarksville, TN to Yankton, SD
That's the driving distance. It would take 15 hours 55 mins to go from Clarksville, Tennessee to Yankton, South Dakota.
The flight distance (direct flight from Clarksville, TN to Yankton, SD) is 689.58 mi.
854 mi = 1,374.88 kms