Sore feet and blisters can ruin your trek. It is essential that your boots are worn in before you arrive: new boots are likely to cause problems. In addition, your feet need to be slightly ‘hardened’ to avoid blisters and hot-spots. A few, reasonably long, weekend walks before the trek will make a big difference. If you want to be sure that you will have no problems, tape your feet from the first day of the trek.