Ray (webmaster) on 11/27/2020 10:20:09 AM:
Assuming you have a bike and gear to transport, you'll probably need a shuttle as opposed to a taxi or Uber.
Here's a list of shuttle services that serve the Katy Trail. The three at the bottom of the list are local to the St Louis area:
https://bikekatytrail.com/planner.aspx?scid=17&ecid=11&rt=0&svcs=|17|
Other options, if you're up for more riding:
Bike to the St Louis airport, and then take Metro light rail from the airport to the downtown Amtrak station (the "Civic Center" stop on Metro). Here's a web page with more details and suggestions:
St Louis Lambert Airport to Katy Trail Directions
https://bikekatytrail.com/airport-katy-trail.aspx
Bike to downtown St Louis (Amtrak is in the southwest part of downtown):
Katy Trail to Forest Park and Downtown St Louis
https://bikekatytrail.com/katy-trail-to-downtown.aspx
Bike to Kirkwood Amtrak Station (assuming you can change your ticket)
https://bikekatytrail.com/kirkwood.aspx
Good luck and happy trails!