There are
2,785 mi
from Napa, CA to Hanahan, SC
That's the driving distance. It would take 2 days 1 hour to go from Napa, California to Hanahan, South Carolina.
The flight distance (direct flight from Napa, CA to Hanahan, SC) is 2,383.28 mi.
2,785 mi = 3.22 kms