Umbwe is a short route, providing challenges as it is very difficult to climb due to its steepness. Due to the fast ascension, this route does not provide the enough time for altitude acclimatization so proceeding slowly is vital. Although the traffic on this route is very low, the chances of success are not as great unless a acclimitization day is added. The route is offered at a minimum of six days, and seven days is preferred. This route merges along the way with Machame route, Lemosho route and Shira route.