There are
940 mi
from Garland, TX to Midlothian, IL
That's the driving distance. It would take 16 hours 33 mins to go from Garland, Texas to Midlothian, Illinois.
The flight distance (direct flight from Garland, TX to Midlothian, IL) is 775.61 mi.
940 mi = 1,513.05 kms