Miles between St Louis, MO and Decatur, AL

There are
421 mi
from St Louis, MO to Decatur, AL

That's the driving distance. It would take 7 hours 45 mins to go from St Louis, Missouri to Decatur, Alabama.

The flight distance (direct flight from St Louis, MO to Decatur, AL) is 330.10 mi.

421 mi = 677.31 kms