When compared to Kilimanjaro, Machu Picchu is a piece of cake. You don’t even have to hike all the way to the summit; you can take a train all the way up.
Comparing Huayna Picchu, the peak visible behind Machu Picchu’s sanctuary. There is no comparison because it is 2,700 meters high (300 meters from Machu Picchu), whereas Kilimanjaro is 5,900 meters. However, it is a challenging ascent that takes around 45 minutes in good physical condition and rewards you with a breathtaking vista.