There are
1,041 mi
from Conroe, TX to Midlothian, IL
That's the driving distance. It would take 18 hours 49 mins to go from Conroe, Texas to Midlothian, Illinois.
The flight distance (direct flight from Conroe, TX to Midlothian, IL) is 892.53 mi.
1,041 mi = 1,674.79 kms