I just completed a trip from Michigan to California in my Model S85. I did not want to take the northern supercharger route Wisconsin, South Dakota, etc. in mid-January. I used superchargers from St. Joe, MI to Springfield, IL. The next supercharger is in Topeka, KS approx. 400 miles from Springfield, IL. There are 2 public chargers (Chargepoint card required, but free) in Columbus, MO that is half way between Springfield and Topeka. The Stoney Creek Hotel is a 1/4 mile from the chargers. A nice hotel stay and an overnight charge and I was on my way to Topeka in the morning. From Topeka to LA was dream, plenty of superchargers allowed me to travel the speed limit or (ahem slightly above) for the remainder of the trip.
Benton Harbor, MI to Manhattan Beach, CA. Four and one-half days and 2300 miles all electric.
Looking forward to some SC's in Missouri soon.