Your decision will depend on where you want to sleep and the hiking distance each day and number of days of each route. On the Marangu Route, you sleep in huts with simple beds, while on all the other routes, you sleep in tents. There are two main routes on the mountain: the Marangu and Machame. You may also want to consider the Rongai Route as it is far less traveled. The Lemosho Route is a good choice if you want a longer route (8+ days).
Why is the Marangu route called the “Coca Cola” route? Is it really dirty and overcrowded?
There has been a lot of negative press about Marangu. In our view, and we arrange treks on all the routes, it is very unfair. This is the only route that uses huts rather than tents and some years ago there was a serious problem with overcrowding in the huts. In those years the Machame route was much less frequented. But we think the main reason that some operators speak against the Marangu and boost the Machame is that the booking system for Marangu is demanding of operators’ time.
There is no booking system for Machame (nor the other camping routes). You just show up at the Machame gate the first morning of the trek. No one ever knows how many people will be on the trail until the gate closes for that day. There is a daily quota of only about 70 climbers allowed to start on the Marangu route on any day (this is why booking is not always easy). There are many days in the season when there are many more climbers on the Machame route than on the Marangu.
This is not in any way to denigrate the very beautiful Machame route. But these are things to bear in mind when hearing the Marangu route described as the tourist, easy or Coca Cola route and the Machame as the scenic or the whisky route! It is true that you will hear many people who have climbed Machame say that it is better than Marangu, and this is conveyed to many of the guide book writers. But remember that the overwhelming majority of climbers only ever climb one route. The chances are that the climbers who say this have never been on the Marangu route and are simply repeating what they have been told or have read.