Chimp trekking in Tanzania – Gombe and Mahale

Chimpanzee trekking in Tanzania takes place in two national parks on Lake Tanganyika's eastern shore, Gombe Stream and Mahale Mountains. Both protect wild populations of Eastern chimpanzees and are reached only by boat, since neither park has roads. Gombe, near Kigoma, is Tanzania's smallest park and the site of Jane Goodall's original research. Mahale is far larger and more remote, reached by charter flight followed by a dhow crossing across the lake.

The dry season, running from May to October, offers the most reliable chimp trekking conditions in both Gombe and Mahale. Forest paths are firmer and safer underfoot, visibility improves, and chimpanzees spend more time at ground level rather than high in the canopy. The wet season, November to April, brings heavier rain and more physically demanding treks, though it does reward visitors with quieter parks and notably lush, green forest scenery throughout.

Chimp trekking is generally considered more physically demanding than gorilla trekking, because chimpanzees range over much wider areas and move quickly through the forest canopy rather than remaining in one place. Treks can last anywhere from thirty minutes to six hours over steep, humid terrain, often without marked paths. Gorilla trekking, by contrast, usually involves shorter walks to a settled troop. Fitness and a realistic expectation of exertion matter for both experiences.

Gombe holds a much smaller population, generally estimated around 100 individuals, reflecting its modest 56km² size. Mahale is considerably larger at roughly 1,650km² and supports one of Africa's largest protected chimpanzee populations, with estimates ranging between 800 and 1,000 individuals across the park, though only a portion of these troops are habituated and regularly visited. Exact current figures should be confirmed with park authorities before publishing precise numbers.

Yes. Both Gombe and Mahale connect by charter flight to savanna reserves further south, allowing chimp trekking to form part of a broader western Tanzania itinerary. Katavi National Park, known for exceptionally large elephant and buffalo herds, and Ruaha National Park, home to significant wild dog and elephant populations, both pair naturally with a stay in the chimpanzee forests, combining forest primates with classic savanna wildlife viewing.

Both parks are reached via Kigoma, itself accessed by scheduled or charter flight from Arusha, Dar es Salaam or Zanzibar. From Kigoma, Gombe is a short boat transfer along the lakeshore, suited to shorter visits. Mahale requires a further charter flight south to an airstrip near the park, followed by a boat crossing of an hour or more to reach its lodges. Neither park has roads, so all movement within them is on foot or by water.

Chimp trekking is a managed wilderness activity with established safety protocols, including trained trackers and guides, a requested ten-metre viewing distance, surgical masks to prevent disease transmission, and capped visitor numbers per troop. Chimpanzees are wild and unpredictable, and encounters can occasionally be close or intense, so visitors should follow guide instructions closely at all times. A reasonable level of fitness is also required for the forest terrain involved.

Essential items include two pairs of sturdy, already broken-in hiking boots, waterproof bags for cameras and electronics, lightweight long trousers and sleeves for nettles and thorns, and a daypack with water and snacks. A realistic level of fitness is required for climbs of up to six hours. Malaria precautions, a surgical mask for chimp encounters, and travel insurance covering remote medical evacuation are also strongly recommended before departure.

Gombe is Tanzania's smallest national park, offering shorter, more accessible chimp trekking near Kigoma and the historic site of Jane Goodall's research. Mahale is around fifty times larger, considerably more remote, and reached only by charter flight and a dhow crossing across Lake Tanganyika. Mahale suits travellers seeking greater exclusivity and a longer, immersive lake and forest stay, while Gombe suits those working with more limited time or budget.

Yes. Chimp trekking permits are required for both Gombe and Mahale national parks, alongside standard park entry fees. Permits are typically arranged as part of a lodge stay or safari booking rather than purchased independently, since both parks are remote and accessible only through registered lodges and safari operators. Our safari experts can confirm current permit and park fee costs, and secure trekking slots, as part of planning your itinerary.