Originally Posted by
alan s
My favorite tires for the C&O are 26x2.35 Big Apples. They don't pick up much mud, and roll nicely over the bumps.
Big Apples are nice on both the C&O and GAP. Continental Touring, Continental City Ride II's, Continental Country Plus, and Continental Travel Contacts are other tires that have worked well on the GAP/C&O for me. All wider, floatier, tough tires that do well on both the crushed limestone of the GAP and mud on the C&O. My personal favorite is the Continental Travel Contact in 700X37 that would fit your bike.
Lots of tires will work though. In general, go as wide as you can and run fenders.