Miles between St Peters, MO and Prospect Heights, IL

There are
326 mi
from St Peters, MO to Prospect Heights, IL

That's the driving distance. It would take 6 hours 13 mins to go from St Peters, Missouri to Prospect Heights, Illinois.

The flight distance (direct flight from St Peters, MO to Prospect Heights, IL) is 268.66 mi.

326 mi = 524.34 kms