Miles between Conroe, TX and Alton, IL

There are
781 mi
from Conroe, TX to Alton, IL

That's the driving distance. It would take 14 hours 35 mins to go from Conroe, Texas to Alton, Illinois.

The flight distance (direct flight from Conroe, TX to Alton, IL) is 663.92 mi.

781 mi = 1,257.49 kms