There is only one official Classic Inca Trail that enters the archeological site of Machu Picchu through the original entrance at the Sun Gate, Inti Punku, but there are several other amazing trails in the surroundings of the Sacred Valley and Machu Picchu.
If you want to know if there are still places available on the famous 4-Days Inca Trail, or to climb the Huayna Picchu Mountain, you can have a look on this official website: www.machupicchu.gob.pe --> click the link “consultas” then --> “camino inka” and select a month to see availability.
Note 2: If you want to Climb the Huayna Picchu or Machu Picchu Mountian on the archeological site of Machu Picchu, you have to let us know BEFORE the booking of your trail. Ones you have booked your trail, which includes the normal entrance to Machu Picchu, it is not possible anymore to change the entrance ticket and climb one of the mountains.
Also it is very important to know that, due to governmental regulations, it is NOT possible to include the entrance fee for climbing the Huayna Picchu Mountain within your ticket for the Classic 4-days Inca Trail. If you want to book this combination you will have to book a complete new entrance ticket for Machu Picchu + Huayna Picchu, which will cost you around 60 US$ extra... It is also NOT possible anymore to combine the 4-days Classic Inca Trail with climbing either Huayna Picchu, or Machu Picchu Mountain!
Please let us know if you have any more questions about hiking the trails/ climbing the mountains.