There are
2,468 mi
from Downey, CA to Hanahan, SC
That's the driving distance. It would take 1 day 19 hours to go from Downey, California to Hanahan, South Carolina.
The flight distance (direct flight from Downey, CA to Hanahan, SC) is 2,186.57 mi.
2,468 mi = 3.22 kms