There are
1,407 mi
from Harlingen, TX to Hanahan, SC
That's the driving distance. It would take 1 day 2 hours to go from Harlingen, Texas to Hanahan, South Carolina.
The flight distance (direct flight from Harlingen, TX to Hanahan, SC) is 1,158.49 mi.
1,407 mi = 2,264.45 kms