Originally Posted by
Retro Grouch
Do you have the technology to look up the Katy Trail say from St Charles to Rochport?
Here is a ride that one cyclist (not me) did along the Katy.
https://www.strava.com/activities/156952670/overview
https://www.strava.com/activities/156952670/analysis
Looking at it, it is pretty flat from about Marthasville to Columbia (Rocheport/New Franklin/Boonville Bridge).
https://www.strava.com/routes/19875341
RT, one gets 228.32 miles.
1116 ft.
4.89 feet per mile.
Of course one gets a little extra rolling resistance from the limestone gravel surface.