At 2,187 metres, Gunung Tahan is the highest peak in Peninsular Malaysia and the summit of the Titiwangsa range. The trek to the top from Kuala Tahan and back takes seven to nine days, covering around 55 kilometres through some of the most remote and undisturbed rainforest in the region. A licensed guide is mandatory and can be arranged through the park office.
The trail crosses the Tahan River dozens of times and passes through several distinct forest zones. The upper mountain is covered in mossy cloud forest, thick with ferns and pitcher plants, often shrouded in mist. Wildlife seen on the approach includes wild boar, sambar deer, hornbills, and occasionally elephants and Malayan tigers. It is a serious commitment requiring good fitness, and genuinely one of Southeast Asia's great wilderness treks.