The Inca Trail forms part of the extensive road network constructed by the Inca Empire during the 15th century. Known collectively as the Qhapaq Ñan, this system of roads and pathways connected large areas of western South America, linking present-day Peru with parts of Ecuador, Bolivia, Argentina, Chile and Colombia. The network allowed the Incas to move armies, goods, information and officials efficiently across difficult mountain terrain.
The section now commonly known as the Inca Trail to Machu Picchu was originally a ceremonial and administrative route leading towards the royal estate of Machu Picchu. The trail passed through mountain passes, cloud forests and a series of small settlements and control points built by the Incas along the route. Many sections of the original stone paving, staircases and drainage systems remain in use today.
The Inca civilisation expanded rapidly during the 15th century under rulers such as Pachacuti, who is generally credited with commissioning Machu Picchu and much of the surrounding infrastructure. The Incas developed sophisticated engineering techniques adapted to the steep and unstable terrain of the Andes. Stone roads were carefully graded, retaining walls stabilised mountain slopes and drainage channels helped reduce erosion during heavy rainfall.
Following the Spanish conquest of the Inca Empire in the 16th century, many sections of the wider Inca road network gradually fell into disuse. Machu Picchu itself remained largely unknown to the outside world for centuries, partly due to its isolated mountain location. In 1911 the American explorer Hiram Bingham brought international attention to Machu Picchu after visiting the site during expeditions in the Cusco region.
Interest in the Inca Trail increased gradually during the 20th century as trekking tourism developed in Peru. Growing visitor numbers eventually led to concerns regarding erosion, overcrowding and damage to archaeological sites along the route. In response, the Peruvian government introduced permit restrictions and regulations to help protect both the trail and the surrounding environment.
Today the Inca Trail remains one of the world’s best-known trekking routes. Its combination of mountain scenery, surviving Inca engineering and the final approach to Machu Picchu through the Sun Gate continues to distinguish it from other treks in the Andes.