Ray (webmaster) on 9/26/2006 1:41:23 PM:
Rick, There are a few established routes to take you south from the St Louis area. Try the Mississippi River Trail (MRT), which parallels the river either north or south from St Louis, as you might guess by the name. the MRT has routes on both the Missouri side (http://www.mississippirivertrail.org/mrt-explore-mo.php#segment1) and Illinois side (http://www.mississippirivertrail.org/mrt-explore-il.php). Another option is Adventure Cycling's Great Rivers route (http://www.adventurecycling.org/routes/greatrivers.cfm?pg=detail&s=1), which appears to cross the Katy Trail somewhere around Marthasville.
I can't vouch for the quality of any of the above routes, but presumably they have been well tested out.
Good luck and enjoy your tour!
J&K, Speaking of the Frisco Highline Trail, I understand that bridge was burned down by vandals - it's a $%#@ shame.