The Marangu or main route is by far the most popular way to the summit. The accommodation on the way up and down is provided in mountain huts with all the basic necessities. It usually takes 5 days/4nights for the round trip. The trek can also be taken in 6 days/5 nights to add acclimatization with an extra day at Horombo Hut. The supplementary cost for an extra day is indicated separately as an option.