There are
829 mi
from Clarksville, TN to Vermillion, SD
That's the driving distance. It would take 15 hours 28 mins to go from Clarksville, Tennessee to Vermillion, South Dakota.
The flight distance (direct flight from Clarksville, TN to Vermillion, SD) is 666.76 mi.
829 mi = 1,333.98 kms