I had to go a full size and half larger to get enough toe box. I had to get a men's shoe for the width across the ball of the foot, as all women's versions were too tight. If your heel doesn't pop up and your toes don't hit shoe when you're walking downhill, it's a good fit. The only way for you to know if the shoes work is to try them on and understand what they should feel/fit like - your feet are nothing like mine, and all brands of shoe are slightly different. Salomans and Keens seem to work okay for my long narrow heeled wide longtoed feet, and I added Superfeet greens (took out the provided insole) to reduce sore flat feet.