kevin from Jeff City on 10/9/2012 1:49:07 PM:
When you do go on your ride, you may want to consider getting to the Katy through Illinois. Take the downtown trail to the Chain of Rocks Bridge, get on the Madison County Trails to Alton and take Hwy 67 to Hwy 94 to the Machens trailhead. A little more scenic (well, except for the Refineries of Madison County) and less traffic than metro St. Louis.
That being said, I like the idea of taking the Metro west to avoid some traffic, too.