Anyone ever do this for a good stretch? I've ridden it from St Paul to Winona, but that's about it for a weekend ride. My wife and I are planning to take the bikes to Arkansas this Fall and may opt to swing out to St. Louis and ride the river back. But I have no clue if the ride is anything special south of MN. I did a quick look at Google maps and there appear to be some stretches. Anyone ever do this? Any input/thoughts?