The Machame route is one of most beautiful routes. Starting from the South-West it boasts a rich ecosystem diversity. Throughout your altitude trek you cross an extraordinary wet forest, a landscape of heathers, a steppe filled with Seneçons and Lobelia and an alpine desert. It ends with a splendid view from the top of Africa.
The Rongai Route approaches the mountain from the North. Relatively remote the route starts from the Kenyan border and connects to the Marangu Route in the South. It offers splendid alpine moorland sceneries and breathtaking views of Mawenzi.
The Lemosho route starts from the western side of Kilimanjaro. The route gets round the flanks of the volcano to reach the Machame Route in the middle of breathtaking landscapes. The forest around the Lemosho Glades is diverse and full of birds.
Umbwe is also a great option and Marangu remains the most popular one with nights in huts. The Western breach is very technical and often closed.
Finally, the Mweka route is a very direct descent route that leads to the forest and the gate at the end of your trip. No ascent is done through that route due to AMS (Altitude Mountain Sickness) problems in the past.
Which one to choose? It all depends of the time you have for your trek and your level of fitness. But crossing the rain forest is an amazing moment that shouldn't be missed especially when climbing through the Machame or Lemosho routes.