There are
2,087 mi
from Downey, CA to Clarksville, IN
That's the driving distance. It would take 1 day 12 hours to go from Downey, California to Clarksville, Indiana.
The flight distance (direct flight from Downey, CA to Clarksville, IN) is 1,822.24 mi.
2,087 mi = 3,358.85 kms