There are
1,593 mi
from Harlingen, TX to Marshfield, WI
That's the driving distance. It would take 1 day 5 hours to go from Harlingen, Texas to Marshfield, Wisconsin.
The flight distance (direct flight from Harlingen, TX to Marshfield, WI) is 1,343.67 mi.
1,593 mi = 2,563.00 kms