Miles between St Charles, MO and Round Lake, IL

There are
341 mi
from St Charles, MO to Round Lake, IL

That's the driving distance. It would take 6 hours 32 mins to go from St Charles, Missouri to Round Lake, Illinois.

The flight distance (direct flight from St Charles, MO to Round Lake, IL) is 277.05 mi.

341 mi = 548.80 kms