Miles between St Peters, MO and Lemont, IL

There are
296 mi
from St Peters, MO to Lemont, IL

That's the driving distance. It would take 5 hours 34 mins to go from St Peters, Missouri to Lemont, Illinois.

The flight distance (direct flight from St Peters, MO to Lemont, IL) is 242.62 mi.

296 mi = 476.03 kms