The final day is a 10 mile hike to the Marangu Gate.
It is a 6000 foot descent the gate so you're work is still cut out for you. You'll travel through high scrub desert, woodland scrub, then into a tropical rain forest. The air is noticeably thicker and it will seem easy to complete this stretch in 3-4 hours. At the gate, signed out and get your certificates for the climb. You will want to book a room in a hotel and plan on cleaning up. The climb is very dusty and you'll be amazed at the amount of the dirt you've collected from the mountain. Uhuru!