The Inca Trail is the classic trail over the original "Inca Road" to Machu Picchu, the last day you will arrive at the Intipunku (Sun Gate) for the sunrise over Machu Picchu.
Salkantay Trek is the top alternative to the Inca Trail - most people do this route because they cannot get on the Inca Trail or they didn´t book in advance. It is more of a nature trail, and actually has much better landscapes than the Inca Trail, but you do miss out on all the archeological sites that are on the Inca Trail! There are no ruins on the Salkantay. Inca Trail - Salkantay has wonderful landscapes of the Peruvian Andes and part of the jungle.
Many people don’t know this or can’t plan so far ahead, so they end up on the “alternative Inca Trail”. There’s one version of this that joins up with the Inca Trail and Salkantay, but if all the permits are sold out that’s not a possibility anyway. The other more frequent option always open is to follow it all the way to the hydroelectric plant near Machu Picchu and then hop a local train at the end.
In Salkantay hike, there are horses and Inca trail are porters, the porters and horses have to carry tents to sleep in them, a sleeping bag and food also, in some places are almost equal to the Inca Trail.
The altitude of Salkantay is 4,550 meters and is higher than the Inca Trail 4,200 meters
On Salkantay trail you will views is Humantay and Salkantay Mountains and the last day you will visit Machu Picchu
On the Inca Trail, you will views 6 ruins on trail, Intipunko (sunrise) and Machu Picchu.