There are
2,084 mi
from Fullerton, CA to Clarksville, IN
That's the driving distance. It would take 1 day 12 hours to go from Fullerton, California to Clarksville, Indiana.
The flight distance (direct flight from Fullerton, CA to Clarksville, IN) is 1,812.52 mi.
2,084 mi = 3.22 kms