I'm planning to ride my first double century next year: the VT 100/200. I've done a bunch of centuries and touring, so I'm not worried about the distance, but am wondering what bike to use. I have a touring bike and a road bike. Both fit well for their intended purposes. Road bike is ~10lbs lighter and has a more aggressive fit. It's also a compact double and has a short cage derailleur so I'm concerned about gearing on the low end. (34-27 would be the lowest.) The touring bike is more comfortable on long rides and has low gears to spare, but is a bit slower.


So, comfort or speed? Which has priority for a double? How would you modify the bike to make it more appropriate for the ride?