What is the real success rate of climbers who reach the top of Kilimanjaro?

The rate of failure is high because there are a lot of climbers who try to do the climb too quickly and cheaply.  This is very difficult and the rate of success is lower than 50%.  If you take your time and go pole, pole (Swahili for slowly, slowly) then your chance of success dramatically goes up.  It is because of this reason alone that we recommend only 6, 7 and higher day treks up the mountain.  The money you save on a 5 day trip is not worth the misery of not making it!

On the trail there is not much to do when you get to camp other than sit in your tent and wait for dinner, so take your time and enjoy the sights and your fellow climbers during your trek.  Also the slower you go, the more energy you conserve, giving you what you need to make it to the top.