Our 3rd day on the trek to Machu Picchu was to make the trek from Santa Teresa to Aguas Calientes. This route is quite touristy for a specific reason, because there are only two ways to get to Aguas Calientes, either on a train that's expensive or by trekking. It's a path that runs along the train tracks but it's very simple and nice, because tit overlooks beautiful landscapes and finally, you begin to see the mountains surrounding Machu Picchu and even the wonderful Inca ruins. In total it takes about 6 hours but you can do only half and rent a van for the next leg. This allows you to save time and get to Aguas Calientes by noon to debate the mountain across from Machu Picchu, the Putucusi.