There are
2,054 mi
from San Clemente, CA to Greencastle, IN
That's the driving distance. It would take 1 day 12 hours to go from San Clemente, California to Greencastle, Indiana.
The flight distance (direct flight from San Clemente, CA to Greencastle, IN) is 1,750.85 mi.
2,054 mi = 3,305.79 kms