The Inca Trail to Machu Picchu is one of the most famous treks in the world. Its popularity is due to the amazing landscapes and Inca buildings built hundreds of years ago, and its final destination: Machu Picchu. Hiking the Inca Trail is an unforgettable experiences. To really enjoy the trek, make sure you are in good shape and acclimatize yourself to the altitude prior to starting out. The most effective and conventional method to eliminate the risk of altitude sickness is to gradually acclimatize to the high altitude. Plan to arrive in Cusco or any of the other high altitude cities at least three days prior to starting the trek.