The Illinois river will take you to umr mm 220 at Grafton, Illinois. It's about 330 miles from Lake Michigan to Grafton, it's at the confluence of the Mississippi and Illinois rivers. Pretty easy trip, I've done it a couple of times. From Grafton you have 2 choices go to the
Ohio or continue on the Mississippi. The problem of going done the Mississippi is lack of
marinas and
fuel. You can plan stops and call for a
delivery of
fuel but they'll probably not deliver less than 200 gallons. The other option is to carry fuel cans and walk into towns and
purchase fuel. Some people choose this
route there are no locks on the mis after St. Louis. If you go up the
Ohio and then
head south on the Tennessee river, TennTom and Black Warrior rivers to Mobile Bay and the gulf, plenty of
marinas on this route. As a previous poster said having a 350 mile range is needed to be able to reach fuel stops. I'am sure I've left some things out but depending on the
boat it's very doable and it's a very enjoyable
cruise.