There are
1,450 mi
from Waukegan, IL to Harlingen, TX
That's the driving distance. It would take 1 day 2 hours to go from Waukegan, Illinois to Harlingen, Texas.
The flight distance (direct flight from Waukegan, IL to Harlingen, TX) is 1,248.89 mi.
1,450 mi = 1.61 kms