Joined: Feb 2013
Posts: 1,472
Likes: 11
From: Near St. Louis, Missouri
Bikes: Giant Defy Advanced, Breezer Doppler Team, Schwinn Twinn Tandem, Windsor Tourist, 1954 JC Higgens
I've ridden short distances on the Katy on 700x25 tires when it was dry. However I prefer using my touring bike with 700x32 tires.
99% of the Katy Trail is crushed limestone but usually pretty hard packed.
If you are ever on I-70 and have the time, I suggest riding from Rocheport, MO. More scenic than Booneville.