Miles between Round Rock, TX and Decatur, AL

There are
817 mi
from Round Rock, TX to Decatur, AL

That's the driving distance. It would take 14 hours 42 mins to go from Round Rock, Texas to Decatur, Alabama.

The flight distance (direct flight from Round Rock, TX to Decatur, AL) is 683.68 mi.

817 mi = 1,315.39 kms