There are
1,565 mi
from Harlingen, TX to Muskegon, MI
That's the driving distance. It would take 1 day 5 hours to go from Harlingen, Texas to Muskegon, Michigan.
The flight distance (direct flight from Harlingen, TX to Muskegon, MI) is 1,342.15 mi.
1,565 mi = 2,518.33 kms