There are
1,629 mi
from Harlingen, TX to Southfield, MI
That's the driving distance. It would take 1 day 6 hours to go from Harlingen, Texas to Southfield, Michigan.
The flight distance (direct flight from Harlingen, TX to Southfield, MI) is 1,391.22 mi.
1,629 mi = 2,622.02 kms