djb, I agree with about fit and said so as much in my first post. I was trying to make a different point - that lower back pain is the only "normal" pain I know of that affects cyclists who ride for long periods of time. The OP asked about shoulder pain being normal, which is why I responded about the only normal pain I know of.

Also, I'm not sure why any of this has anything to do with the fact that I haven't toured yet. I have plenty of experience with long bike rides and the pains involved doing them.