There are
595 mi
from Clarksville, TN to Port Huron, MI
That's the driving distance. It would take 11 hours 30 mins to go from Clarksville, Tennessee to Port Huron, Michigan.
The flight distance (direct flight from Clarksville, TN to Port Huron, MI) is 516.27 mi.
595 mi = 958.30 kms