Miles between St Peters, MO and Alton, IL

There are
34 mi
from St Peters, MO to Alton, IL

That's the driving distance. It would take 48 minutes to go from St Peters, Missouri to Alton, Illinois.

The flight distance (direct flight from St Peters, MO to Alton, IL) is 23.95 mi.

34 mi = 54.33 kms