There are
825 mi
from Mckinney, TX to Clarksville, IN
That's the driving distance. It would take 14 hours 42 mins to go from Mckinney, Texas to Clarksville, Indiana.
The flight distance (direct flight from Mckinney, TX to Clarksville, IN) is 703.82 mi.
825 mi = 1,327.82 kms