Miles between St Peters, MO and Des Plaines, IL

There are
320 mi
from St Peters, MO to Des Plaines, IL

That's the driving distance. It would take 6 hours 8 mins to go from St Peters, Missouri to Des Plaines, Illinois.

The flight distance (direct flight from St Peters, MO to Des Plaines, IL) is 266.58 mi.

320 mi = 515.33 kms