In order to book your Inca Trail treks, the Peruvian authorities cap the number of Inca Trail trekking permits to 500 per day. Everyone entering the trail needs a permit including the trekker, guide, porters and other support staff. Permits often sell out several months in advance and you must book well ahead to secure your place. When you fill in our booking form you must fill in alternative start dates that are possible for you to begin the trek and these have to be validated. If your preferred date is sold out we will use one of these alternative dates for your permit. Once we purchase your permit from the National Park office, you are 100% confirmed to start this day; this date cannot be changed. Permits are completely non-refundable or transferable, so please make sure the date you booked is a good date to start this adventure. Your permit is linked to your name and passport number. If you change your passport after booking your Inca Trail trek permit or you plan to travel with a different passport, you MUST also bring the passport you used to book your permit, or you will not be able to trek the Inca Trail trek.