There are
1,238 mi
from Harlingen, TX to Vincennes, IN
That's the driving distance. It would take 23 hours 6 mins to go from Harlingen, Texas to Vincennes, Indiana.
The flight distance (direct flight from Harlingen, TX to Vincennes, IN) is 1,045.25 mi.
1,238 mi = 1,992.88 kms