There are
1,842 mi
from Harlingen, TX to Pottsville, PA
That's the driving distance. It would take 1 day 10 hours to go from Harlingen, Texas to Pottsville, Pennsylvania.
The flight distance (direct flight from Harlingen, TX to Pottsville, PA) is 1,585.95 mi.
1,842 mi = 2,965.16 kms