The trail opens before dawn—headlamps bobbing, breath steaming in the thin air as the van drops you at Challacancha and the first switchbacks begin.
Over five days the landscape shifts from wind-swept puna to glaciated ridgelines, then down into a warm, green cloud forest where orchids and coffee plants edge the path. You climb to Abra Salkantay at about 4,650 m (15,250 ft), the high point that frames the massif of Salkantay, then descend roughly 1,700 m through mixed terrain before finishing at Aguas Calientes and Machu Picchu.
The route crosses zones shaped by Pleistocene glaciers and active Andean uplift; pre-Inca and Inca pathways reappear in stone terraces and the Llactapata ruins. Local Quechua communities still herd llamas and farm tubers on steep slopes, keeping ancient agricultural patterns alive.
Expect varied trails—rocky moraine, packed dirt, and sometimes slippery jungle tracks—with daily stages averaging 10–16 km and several sustained 3–5 hour ascents or descents. Altitude is the variable that defines the trek: acclimatize in Cusco, move deliberately uphill, and watch for headaches or nausea.
Practical edge: bring layered insulation for alpine mornings, sturdy trail shoes with good grip, and a rain shell for sudden tropical downpours lower on the route. Hydrate early, use sun protection, and budget an extra day in Cusco if you want to rest before tackling the pass. The payoff is a final morning inside Machu Picchu—ancient terraces and stonework revealed after a week of hard, unforgettable walking.