Miles between Waterloo, IA and St Louis, MO

There are
338 mi
from Waterloo, IA to St Louis, MO

That's the driving distance. It would take 6 hours 38 mins to go from Waterloo, Iowa to St Louis, Missouri.

The flight distance (direct flight from Waterloo, IA to St Louis, MO) is 289.81 mi.

338 mi = 543.62 kms