Miles between Decatur, IL and Lake St Louis, MO

There are
149 mi
from Decatur, IL to Lake St Louis, MO

That's the driving distance. It would take 3 hours 11 mins to go from Decatur, Illinois to Lake St Louis, Missouri.

The flight distance (direct flight from Decatur, IL to Lake St Louis, MO) is 122.33 mi.

149 mi = 239.55 kms