tttoadman
WKR
To the original point of your hips being sore, it's possible you have the hip belt too low on your hips which will impede movement of your legs and could cause the soreness. Middle of the hip belt should be on the point of your hip.
I will add to this point. I keep a relatively slow and steady pace no matter what I am doing. I have noticed that I will get sore hips as soon as I lengthen out my stride and get more hip rotation. I have remedied this by loosening the belt a little when I hit a trail and bomb back for camp in the dark. Remember it is not a race. A slow and steady pace with minimal body movement will be more comfortable on your feet shoulders and hips. These are just my observations for myself.