I'm getting longer distances these days (40-70 miles a ride) , some of it is a new bike that fits me and a saddle that feels great (at last!) but most of it is learning to cope with all the little pains that crop up during the ride. They seem to hit in stages, knees the first two miles(that clears up after I warm up it seems) , butt pain much later and any number of wrist, elbow, foot and shoulder discomforts in between. By moving around, standing, stretching on the bike etc I am able to manage, in a way, to keep moving in relative comfort.
Any of you high mile guys have words of wisdom on the topic?