I've been thinking about doing this ride for some time, and the routes don't seem that hard to figure out. There are a few choices, some simple, for going to Lambertville/New Hope, and then the Phila Bike Map gets you the rest of the way. If you can run the tires for it, you can use the D&O canal for a good chunk of the trip too.

But what I can't figure out is how to get BACK home with my bike! Maybe ride back up to Trenton or Princeton and get NJTransit, but that gets you into a lot of miles for one day.