Mount Korbu is also the second highest mountain in Peninsular Malaysia, standing at 2,183 metres (4 metres lower than the highest peak, Mount Tahan that stands at 2,187 metres in the state of Pahang). A reasonable level of physical fitness is required to climb/trek Mount Korbu. It used to take an average climber four days and three nights for a return trip, but the duration are being cut short in recent years and some have even made it within 12 hours. Most climbers now do without any guide as the trail has become very obvious (at some stretches even badly deteriorated due to over-trekked), but, as for other local mountains, there are occasional reports of climbers getting lost. Mount Gayong (2,173 m), the fourth highest mountain in Peninsular Malaysia, can be reached in about a 90-minute (one way) trek from the peak of Mount Korbu.