There are
1,145 mi
from Conroe, TX to Hilliard, OH
That's the driving distance. It would take 21 hours 8 mins to go from Conroe, Texas to Hilliard, Ohio.
The flight distance (direct flight from Conroe, TX to Hilliard, OH) is 964.41 mi.
1,145 mi = 1,843.19 kms