The Inca Trail is a historical route that was used by the Incas in ancient Peru to travel through the Andes mountain range. The full length of the Inca Trail is approximately 43 km and is located in the Cusco region of southern Peru. There are various trekking options that allow you to travel the Inca Trail in different lengths of time, from one day to several weeks. The 5-day trek is a popular option that allows you to travel a significant portion of the Inca Trail and reach the citadel of Machu Picchu, one of Peru's main tourist destinations.