There is only one trek leading to the summit of Mount Mulu. The summit is located at 24 km away from the park headquarters. The trek starts from the national park headquarters to reach Camp 3. It is a 12 km hike through the primary forests with an elevation of 1,200 metres. The mossy forest starts from Camp 3. It will be a few hours to climb to reach Camp 4. After Camp 4, there are a few vertical climbs which requires knotted ropes which eventually leads to the summit. Camp 1 is located along the descending trek from the summit of Mount Mulu. There is another 3-hour hike to reach the park headquarters from Camp 1.