My favorite shoe for walking all day on a trip like that is Altra. I wear the Escalante 4. They do make many other models. The Escalante 4 has quite a wide toe box, and the rest of the shoe is average width. The midfoot feels great on me and the heel never slips at all. I just wear a good quality athletic sock in them which is soft, stretchy and not tight anywhere especially in the toe box. Usually I wear Injinji toe socks now as they allow my toes to splay nicely and are comfortable for me. I also need the toe separation. Hope this helps.