There are
1,088 mi
from Conroe, TX to Deerfield, IL
That's the driving distance. It would take 19 hours 50 mins to go from Conroe, Texas to Deerfield, Illinois.
The flight distance (direct flight from Conroe, TX to Deerfield, IL) is 921.71 mi.
1,088 mi = 1,751.17 kms