The Machame Route is the most popular route since awareness about the importance of proper acclimatization started increasing.
This route offers an ideal acclimatization profile “hike high, sleep low”. It can also be extended over 7 days which drastically increases the summit success rate. Furthermore, this route offers some of the best sceneries on Kilimanjaro.
Historically, the Marangu Route was the most popular route due to its hut accommodation and the duration. The route can be completed in 5 days. As a consequence, the Marangu route also has the lowest summit success rate as it doesn’t allow enough time to acclimatize.