Unlike the Inca trail, where there is a limit of 400 trekkers per day and so tickets can be sold out up to six months in advance, there are no limits for the Salkantay trek. This makes it an excellent alternative if you’d been hoping to hike the Inca trail but have found that there isn’t any space.  The only restriction you’ll face is on the availability of entry tickets to Machu Picchu, so it’s still worth trying to book at least a few weeks in advance, particularly if you’re travelling between June and August. As a result, you'll find it a good idea to book your trek in advance before you arrive in Peru; you can also check out what we think are the best times to visit Machu Picchu before deciding when to travel. Better still, while an unlimited number of hikers allowed on the trailhead doesn’t sound fun, if you trek with Alpaca Expeditions, you’ll likely not see anyone else. This is because they schedule the trek to avoid all of the other tours leaving from Soraypampa. Through this wizardry, during the entirety of the five-day trek, we met only six other hikers.