We biked the Katy Trail in 2013, west to east, from Boonville to St. Charles. We are going again this month, but due to time constraints, we are only doing N. Jefferson to St. Charles. My tip is concerning entertainment. I highly recommend Hermann and Augusta. If you love German food or wineries, don’t miss out! Also, I’m not sure about other times during the year, but (affordable) lodging is not easy to find along the trail during the fall. We have a driver that can take us wherever we need to go, off the trail, thankfully. If anyone has any tips for this issue, I’d love to hear them.