Khao Yai: guide to Thailand's oldest and most accessible national park

Khao Yai is the first national park Thailand declared — it did so in 1962 — and remains today one of the few places in the country where wild elephants and gibbons can be seen in freedom with relative ease. It is only three hours from Bangkok, making it the most accessible nature destination for travellers with limited time, and at the same time one of the parks least known by international tourism — most visitors are weekend Thais, which generates a very different dynamic from the southern parks. If you have a week in Thailand and want a jungle injection without losing three days to transport, Khao Yai is the answer.

What it is and what it holds

Khao Yai (big mountain) National Park covers 2,168 km² of limestone mountain blanketed in tropical monsoon forest, with altitudes between 400 and 1,350 metres. It is part of the Dong Phayayen-Khao Yai Forest Complex, declared a UNESCO natural heritage site in 2005. Fauna includes some 300 wild Asian elephants, white-handed (lar) gibbons and pileated gibbons, macaques, hornbills, Sambar deer, sun bears, and — very rarely — Indochinese tigers.

Vegetation is classic Thai monsoon jungle: very tall, dense, with closed canopies that let little light through. At some points grasslands open up — the grasslands — the result of old fires, which is precisely where elephants and deer concentrate at sunset. This combination of closed forest and open clearings is why the park delivers good sightings.

How to get there

From Bangkok by bus: bus from Mo Chit terminal to Pak Chong (the base town closest to the park), 3 hours, 150-200 THB. Departures every hour. From Pak Chong, songthaew or taxi to the park entrance (20 km, 30-40 min).

From Bangkok by train: train from Hua Lamphong station to Pak Chong, 4 hours, very low prices. Less frequent than the bus, but picturesque.

From Bangkok by rental car: 2h30m on highways 1 and 2, Pak Chong exit. The most comfortable option to move around inside the park, which is huge and poorly served by public transport.

Organised tours from Bangkok: many operators offer day, two-day or three-day trips from Bangkok with transport, guide and activities. Prices between 2,500 and 5,500 THB depending on length. Greenleaf Tour, Khao Yai Nature Life, Bobby’s Jungle Tours have good reputations.

Moving around inside the park

This is the key point many travellers overlook: there is no public transport inside the park. Distances between points of interest are considerable (the main road crosses 50 km of the park), and without your own vehicle or a guide with a jeep you can spend a whole day without seeing anything.

Three solutions:

Own or rented car. Most comfortable and flexible. Park entry: 400 THB per foreigner + 50 THB per car.

Organised tour with guide and jeep. Best option for sightings because guides know the animal patterns. 1,500-2,500 THB half day, 2,500-4,000 THB full day.

Camping inside the park. The park has two camping areas (Lam Takhong and Pha Kluai Mai) with tent and basic equipment rental. Low prices, unique experience thanks to the night atmosphere: elephants occasionally cross the paths, gibbons can be heard at dawn. Book ahead in high season.

What to see: the essentials

Haew Narok Waterfall. The park’s main waterfall, with a 150-metre three-tiered drop. It is the one featured in Danny Boyle’s The Beach in the cliff jump scene. The viewpoint is at the end of a 1 km trail from the parking. Impressive in rainy season (June-October); in dry season it can be modest.

Haew Suwat Waterfall. Smaller (20 m) but with a bathable pool at the foot (dry season). Easy access, good midday stop.

Phae Kluay Mai Viewpoint. Viewpoint over the jungle, ideal at sunset if the weather is clear. Gibbons often begin their calls here at 6 pm.

Nong Phak Chi Watchtower. Observation tower at the edge of a grassland, one of the best spots to see elephants and deer late afternoon and at sunrise. Arrive 45 minutes before sunset and wait with patience.

Kilometre 30 grasslands. The most famous zone for elephant sightings. Family herds come down to the clearing to drink at sunset and often cross the road. Patience; a guide’s or ranger’s tip is the best guide.

Additional activities

Guided hiking. The park has several marked trails and more unmarked trails requiring a certified guide. Typical routes are 3 to 8 kilometres, low to medium difficulty. Essential to carry leech repellent (there are many after rains) and closed shoes.

Night wildlife watching. Guides carry powerful torches at dusk and look for civets, bears, deer and — with luck — leopards. One of the most memorable park experiences.

Bat walk. At the park entrance (Khao Luk Chang), at sunset millions of bats stream out of a cave in a cloud rising over the hills for 30-45 minutes. Free, an overwhelming natural spectacle. 16:30-18:30 depending on season.

The Khao Yai wineries

A little-known aspect is that the Khao Yai area has become, over the past 25 years, an emerging wine region. The mild high-altitude climate and limestone soils allow decent wine production (especially Shiraz, Chenin Blanc and Grenache). The best-known wineries are GranMonte, PB Valley Khao Yai Winery and Alcidini Winery, with tasting and restaurant. Prices are not economical (tastings of 400-800 THB, menus 800-1,500), but it is a curious and entirely atypical experience for Thailand.

The wineries are outside the park, in the Pak Chong area, making it easy to combine with a couple of days in Khao Yai.

When to go

November to February. High season. Cool, dry, clear. Best visibility for sightings. More tourists (especially Thais on weekends).

March to May. Hot but dry. Animals more concentrated around water points, easier to spot. Waterfalls at low flow.

June to October. Rains. Spectacular waterfalls. Jungle at its most alive. Many leeches. Fewer tourists.

How many days

One day from Bangkok: possible but tight. Allows only 5-6 hours inside the park.

Two days one night: the ideal. Arrive in the morning, two park outings (sunrise and sunset). Sleep at a lodge outside the park or camp inside.

Three days: for those wanting to add wineries, bat caves and unhurried hiking.

Where to sleep

Inside the park: camping (200-500 THB own tent, 700-1,500 THB rented tent). Rustic park bungalows 1,200-2,500 THB.

Outside the park (Pak Chong): Muthi Maya Forest Pool Villa (luxury), Baan Suan Khao Yai (boutique), Kirimaya (golf resort). Range 2,000-8,000 THB.

The full Far Guides Thailand guide includes a detailed park map with viewpoint coordinates, sighting times and recommendations on certified guides.