The Chogoria route is an awesome option for your descent. It takes a bit longer so you’ll need more time. It’s well worth it though. The scenery is spectacular and you’ll be able to take in views of waterfalls and an amazing gorge. This descent takes around three days.
Naro Moru route is the shortest and most direct route. As such it tends to be busy and popular. It’s great for the descent as it’s relatively quick and easy. The plant life on offer on the way is spectacular. However, it has sections such as the notorious Vertical Bog, which can get waterlogged. This trail can be done in a long day but it’s better across two days and one night.