Day 1: Cusco, van to Ollantaytambo, train to Km 104, hike to Machu Picchu, bus down to Aguas Calientes. Day 2: bus back up for the guided visit, then return to Cusco. Chachabamba and Wiñay Wayna elevations are from the Adios itinerary. The other elevations are the usual published figures for these places.