The Inca Trail is a 43-kilometer (25-mile) trek through a mountainous region, involving hiking for 5-7 hours a day at high altitude and over rough terrain. Make no mistake, the Inca Trail is a fairly difficult trek and you should be well prepared and healthy prior to starting it. You should be fit and exercise regularly before your trek. It is also important to be well acclimated before starting the trek. We recommend spending 2 or 3 days in Cusco (3400 meters / 11,154 feet above sea level) prior to starting the trek. If you do not take regular exercise or have a heart, respiratory, knee or back problem, do not consider doing the trek.