Waterfalls, viewpoints, grasslands where deer come down to graze, and genuinely wild animals — in one of the largest forests within reach of Bangkok. Here is the entry fee, the gate hours, the circuit to do, and what to know before you drive up.
Let's be clear up front: Khao Yai is not just another day-trip near Bangkok. It is Thailand's very first national park, established in 1962, and later inscribed as a UNESCO World Heritage site within the Dong Phayayen–Khao Yai Forest Complex. It covers more than 2,000 square kilometres across four provinces, and the main gate most people use is in the north, on the Pak Chong side of Nakhon Ratchasima province.
What makes Khao Yai special is that it is real forest with real animals — not a zoo. There are wild elephants, gibbons, hornbills, sambar deer, barking deer and macaques, and on a lucky day a sun bear or a leopard. These animals live their own lives in the forest. On the Nong Phak Chi grasslands at dawn or dusk you may see a herd of deer come down to graze, and on the road at night you may have to stop your car and let an elephant pass — that is both the appeal and the responsibility that come together here.
This page is the practical guide to the park itself: the entry fee, the gate hours, the circuit to do in a day, wildlife and the night safari, camping, the leech reality in the wet season, and the safety rules. The cafes, wineries and farms in the surrounding belt live on their own pages — because Khao Yai really is two trips in one.
A single main road threads past most of them — plan the order well and you can do the lot in a day, but you will need a car.
The park's most famous waterfall, dropping roughly 20–25 metres into a round pool — the cascade that appeared in the film 'The Beach' with Leonardo DiCaprio. It is a short walk down from the car park to the viewing deck. Fullest and most dramatic after the rains. Read more about both falls on the Haew Narok & Haew Suwat waterfalls page.
Pha Kluai Mai is a popular viewpoint over the Pha Kluai Mai falls and a wide sweep of forest, while Pha Diao Dai (Pha Trom Jai) is the spot for sunset and the cool-season sea of fog. Both involve a short walk in from the car park, so bring comfortable shoes and arrive before sunset to claim your place.
A wide grassland with a watchtower you can climb to look for herds of deer, barking deer and sometimes wild elephants coming down to the salt lick. Early morning and just before dusk are the golden hours. Stay quiet, use binoculars, do not make noise — and never feed the animals.
There are short, self-guided trails around the visitor centre that run through evergreen forest where you can hear gibbons and hornbills. Longer routes (toward Nong Phak Chi or Haew Suwat, for example) sometimes require a ranger guide — ask at the visitor centre first. In the wet season there are leeches, so bring leech socks and watch for slippery ground.
Khao Yai's signature activity is the ranger-led night drive, spotlighting for deer, porcupines, civets and the occasional elephant. Book at the visitor centre. Times, prices and etiquette are on the wildlife and night safari page.
Khao Yai is genuine forest. The animals you will see most often are deer, barking deer, macaques, gibbons and hornbills, with wild elephants appearing now and then, especially on the grasslands at dawn and dusk and on the road at night. To be honest, though, this is nature, not a show — whether the animals turn up is down to luck.
The night safari is a ride in a park pickup truck, ranger-led and spotlit, generally running in the evening (roughly 7 to 9 pm) for about an hour. Book at the visitor centre before 6 pm. It is priced per truck for a group (around ฿500–600 per truck seating several people — check the current rate on site). It is a watch-from-the-truck activity, so keep it respectful: no shining lights in animals' faces, no harassing wildlife.
Khao Yai has two main campgrounds, Pha Kluai Mai and Lam Takhong, both with toilets, service points and tents and bedding for hire — the best way to do it if you want to wake up to the morning fog and be inside the forest while the animals are out. Book in advance through the Department of National Parks (DNP) system, especially in the cool season and on long weekends, when sites fill up fast.
Nights up top are genuinely cold, particularly December and January, so bring warm layers and a good sleeping bag. Store food securely in your car or a box because macaques and other animals will raid it, and do not leave litter — carry a rubbish bag and take it out with you.
From June to October the forest is at its greenest and the waterfalls at their fullest and best — but it comes with a catch: leeches in the wet forest along the walking trails. Bring leech socks, wear long trousers, and carry salt or balm to help leeches drop off. Leech bites are not dangerous, but they bleed and itch.
Some trails are slippery and some close temporarily after heavy rain, especially the steep Haew Narok staircase trail, which is dangerous when the water is high. Watch the warning signs and listen to the rangers, always. Do not swim where signs forbid it — flash floods come fast and there have been accidents.
Never feed any animal, especially macaques and elephants. Feeding makes them aggressive, brings them up to cars, and ends up dangerous for both people and the animals themselves. Keep food and plastic bags out of sight — macaques will grab things from a car with an open window.
Wild elephants use the roads at night. Drive slowly, dip your lights, never use your horn or flash, and always give the elephant the road. If one approaches, reverse slowly — do not rev the engine or make loud noises, and keep as much distance as you can. More on driving in Khao Yai and the trickier spots is on the getting around Khao Yai page.
Straight talk first: Khao Yai is car country. It is about a 2.5–3 hour drive from Bangkok via Motorway 6 / Mittraphap Road to Pak Chong, then up Thanarat Road (Route 2090) to the northern gate. There is no public transport inside the park, and there is no BTS/MRT/skytrain or metro anywhere in the region — but the good news is that the train reaches Pak Chong station, which is a comfortable, scenic way to get to the area.
Most options sit along Thanarat Road near the gate, or in Pak Chong town — pick by style and budget.