The Inca road system once ran to roughly 40,000 kilometres of engineered causeway across six modern countries. The section that carries most walkers today measures twelve.
That short corridor, the spine of the 2 Day Inca Trail Hike to Machu Picchu tours that leave Ollantaytambo before dawn, begins at railway kilometre 104 and ends at a stone gate set into the ridge above the citadel.
Pachacuti's masons laid the route in the fifteenth century as a ceremonial approach rather than a supply road, which is why it climbs when a river path would have been easier. Hiram Bingham's 1911 expedition reached the citadel from the valley floor and missed the corridor entirely; surveyors only mapped and cleared it decades later. What survives is a graded causeway of fitted granite cut into the eastern flank of the Vilcabamba range, threading cloud forest that holds bromeliads, tree ferns and more than 400 recorded orchid species.
Two sites give the walk its structure. Chachabamba, a riverside ritual complex at 2,170 metres, sits a few minutes past the Urubamba footbridge: carved baths fed by channelled spring water, unrecorded by archaeologists until 1940. Wiñay Wayna, several hours higher, terraces a near-vertical slope with roughly fifty agricultural platforms and a run of ten fountains descending the hillside in sequence. Its name means "forever young" in Quechua, after the orchid that grows on the retaining walls. Both were built without mortar, iron tools or wheels, and both drain so efficiently that the terraces have held through five centuries of Andean rain.
The corridor matters now for a reason its builders would recognise. Machu Picchu Archaeological Park is a UNESCO World Heritage site, and access along this stretch is capped by a daily permit quota administered from Cusco, which keeps the path closer to its intended scale than the road below. Walkers on the short Inca Trail trek — the Camino Inca corto — climb through four distinct forest bands, pass Inca-era stonework cut straight from the slope, and reach Intipunku, the Sun Gate, at 2,720 metres. The gate is a doorway of dressed stone aligned so the citadel sits square in its frame, terraces and all, with Huayna Picchu behind. Arriving by train places a visitor at the foot of the site; a 2 Day Inca Trail Hike to Machu Picchu tour places them above it, on the axis the architects drew.
48 hr
