Miles between Round Rock, TX and Mt Vernon, IL

There are
869 mi
from Round Rock, TX to Mt Vernon, IL

That's the driving distance. It would take 15 hours 6 mins to go from Round Rock, Texas to Mt Vernon, Illinois.

The flight distance (direct flight from Round Rock, TX to Mt Vernon, IL) is 735.02 mi.

869 mi = 1,399.13 kms