There are
1,623 mi
from Flagstaff, AZ to Clarksville, IN
That's the driving distance. It would take 1 day 4 hours to go from Flagstaff, Arizona to Clarksville, Indiana.
The flight distance (direct flight from Flagstaff, AZ to Clarksville, IN) is 1,443.76 mi.
1,623 mi = 2,612.01 kms