There are
2,055 mi
from Upland, CA to Clarksville, IN
That's the driving distance. It would take 1 day 12 hours to go from Upland, California to Clarksville, Indiana.
The flight distance (direct flight from Upland, CA to Clarksville, IN) is 1,792.44 mi.
2,055 mi = 3.22 kms