My bad. I was including a stop at Macinaw but it didn't get typed for some reason. The point is still valid that the boat in question should reasonably be able to make the run that late in the season.   As far as the 230 mile days, the original post indicated a cruise speed of 23, so assuming a 10 hour day... On the river system that should be racheted down due to locks but on the river system weather is much less of an issue.   Mike & Tammy Valhalla II