Barry from Houston (formerly St. Charles, MO) on 10/12/2022 7:16:54 PM:
COULD/CAN you ride from the arch to Machens TH? Technically speaking, yes. Should you? Nope.
The STL region is not really very bike friendly, especially for urban riding (which is what about 75% of this ride would be). For my money, too many risks with very little reward. Go and visit the arch then find a nice little hotel across the MO river in “downtown” St. Charles…ride east to the Machens on the KT, around and begin your trip.
As others have said, there’s a lot to be said for riding west to east. But some ignore this and ride east to west anyway…and they probably enjoy it at least as much. FYI…this direction will render the last big chunk of your ride less visually appealing, IMO. No cliffs, no river, very little life. But maybe you prefer this!
Best of luck.