What is the success rate of reaching the summit?

Although you can train for climbing Kilimanjaro to ensure you are in good physical condition, whether you manage to reach the summit could be decided by how well you react to being at altitude. There are drugs available that may help you with altitude sickness such as Diamox, or you could visit the Altitude Centre for an AMS susceptibility test. However the best way to increase your chances of reaching the summit is by spending as many days on the mountain as possible to allow your body time to acclimatize. You could also consider climbing Mount Meru before attempting Mt Kilimanjaro, but again this will not necessarily guarantee your chances of reaching Uhuru peak.