Miles between Richardson, TX and Decatur, AL

There are
642 mi
from Richardson, TX to Decatur, AL

That's the driving distance. It would take 11 hours 42 mins to go from Richardson, Texas to Decatur, Alabama.

The flight distance (direct flight from Richardson, TX to Decatur, AL) is 571.09 mi.

642 mi = 1,033.07 kms