There are
1,616 mi
from Harlingen, TX to Sandusky, OH
That's the driving distance. It would take 1 day 6 hours to go from Harlingen, Texas to Sandusky, Ohio.
The flight distance (direct flight from Harlingen, TX to Sandusky, OH) is 1,356.47 mi.
1,616 mi = 2,600.58 kms