Best Places to See Orangutans in Sumatra

Bukit Lawang is a village beside Gunung Leuser National Park and a popular base for guided orangutan treks. You can explore the rainforest on a day trek or spend several days walking and camping. The chance of seeing orangutans here is high, although sightings are never guaranteed. Trails can be steep and muddy, especially after rain. Choose a responsible guide, keep your distance, and never feed or touch wildlife.

Ketambe, in Southeast Aceh, is another starting point for exploring Gunung Leuser National Park. Its forests are known for orangutan research and offer visitors a chance to look for Sumatran orangutans with a local guide. Wildlife encounters depend on conditions and are never guaranteed. Ketambe is worth considering if you want to spend time trekking and observing the rainforest beyond Bukit Lawang.

Bukit Lawang: You can choose a shorter trek or spend several days in the forest. Tell your guide if you need a gentler route, although even short trails may have roots, slopes and mud. Some formerly released orangutans are accustomed to people, and wild orangutans also live here. In my experience as a local guide, the chance of a sighting is high. A three-day, two-night trek gives you more time to look for wild orangutans, but nothing is guaranteed.

Ketambe: This part of Gunung Leuser is known for research on wild orangutans. Seeing them depends on where they move and feed, so allow time for the forest experience itself. Trail difficulty varies; discuss the route with a local guide before booking.

Bukit Lawang is one of the easier orangutan trekking bases to reach from Kualanamu International Airport. A private car offers flexible pickup and usually takes around four hours, although traffic can make the journey shorter or longer. A shared taxi is another option if its departure time suits your flight. For public transport, travel to Binjai and continue by local minibus to Bukit Lawang. Allow extra time for waiting and transfers.

Ketambe takes more planning. From Medan, travellers can take a minibus or shared vehicle towards Kutacane, then continue by local transport to Ketambe. The road journey is considerably longer than the trip to Bukit Lawang. If you plan to visit both trekking areas, remember that travelling between them by public transport generally involves returning through Medan.

Bukit Lawang can also fit into a longer North Sumatra trip that includes Tangkahan, Berastagi or Lake Toba. These are separate stops, so leave enough days for the road journeys rather than treating them as quick side trips.

Whether you trek in Bukit Lawang or Ketambe, let your guide decide where to stop and how close to approach. Observe orangutans quietly, give them space and never feed or touch them. If an orangutan moves towards your group, follow your guide’s instructions rather than trying to get a closer photo. A good encounter lets you enjoy the moment while allowing the animal to continue its natural behaviour.

Bring shoes with good grip, lightweight clothes, drinking water and a rain jacket. Trails in both Bukit Lawang and Ketambe can be muddy or slippery, especially after rain. A small dry bag helps protect your phone and camera. For an overnight trek, ask your guide what camping equipment, meals and drinking water are provided before you pack. Travel light, but bring any personal medication you may need.