There are
2,354 mi
from Sunnyvale, CA to Clarksville, IN
That's the driving distance. It would take 1 day 17 hours to go from Sunnyvale, California to Clarksville, Indiana.
The flight distance (direct flight from Sunnyvale, CA to Clarksville, IN) is 1,967.84 mi.
2,354 mi = 3.22 kms