A lot of people do not realize how many epic or long rides can be created here in the lehigh valley. With so many trail systems, rail trails, parkways, canal paths, and back roads; many endless and creative rides can happen.
Here is a good example, I usually do this ride on my mtb or cx bike over the winter to stay in shape and keep base mileage; http://www.mapmyride.com/route/us/pa/whitehall/414129073905998655