Miles between St Louis, MO and Mason City, IA

There are
420 mi
from St Louis, MO to Mason City, IA

That's the driving distance. It would take 8 hours 18 mins to go from St Louis, Missouri to Mason City, Iowa.

The flight distance (direct flight from St Louis, MO to Mason City, IA) is 349.79 mi.

420 mi = 675.73 kms