There are
1,950 mi
from Fontana, CA to Clarksville, TN
That's the driving distance. It would take 1 day 9 hours to go from Fontana, California to Clarksville, Tennessee.
The flight distance (direct flight from Fontana, CA to Clarksville, TN) is 1,697.15 mi.
1,950 mi = 3,138.05 kms