There are
1,756 mi
from Harlingen, TX to Laurel, MD
That's the driving distance. It would take 1 day 8 hours to go from Harlingen, Texas to Laurel, Maryland.
The flight distance (direct flight from Harlingen, TX to Laurel, MD) is 1,499.30 mi.
1,756 mi = 2,826.61 kms