There are
1,428 mi
from Harlingen, TX to Wilmington, OH
That's the driving distance. It would take 1 day 2 hours to go from Harlingen, Texas to Wilmington, Ohio.
The flight distance (direct flight from Harlingen, TX to Wilmington, OH) is 1,216.41 mi.
1,428 mi = 2,297.74 kms