Yes and no. Nobody can trek the Inca Trail on their own. To trek the Inca Trail you must book with a tour operator that will buy your permit for you and accompany you on the trek, setting up camp and cooking for you.
At Follow Alice, we encourage solo travellers to sign up for one of our group departures so that we can put you in a small group with other travellers whom you get to know and likely befriend during your shared adventure!