Harborside Marina is a full service marina located 60 mile Southwest of Chicago on the Illinois River. Our mile marker is 273.3 near the mouth of the Kankakee River Southwest of Joliet, Illinois. We offer a full service department and complete sales department. We are dealers for Mainship Trawlers, Harbor Home's & Aqua Lodge. We also have a great selection of used and brokered boats and yachts.