Walking Khao Yai: The Park's Seven Trails, and Which Gate to Use

Khao Yai is Thailand's first national park and a UNESCO World Heritage site, and from the villa it is closer than most people assume — the southern checkpoint is about 57 km away, roughly an hour by car, while the famous Pak Chong gate is nearly twice that. The park publishes exactly seven nature trails, and the useful part is knowing which of them you can simply walk and which need a ranger.

Getting in: two gates, one window

• Noen Hom checkpoint, on Highway 3077 on the Prachinburi side — the gate for anyone based in Nakhon Nayok. About 57 km from the villa, roughly 55 minutes to 1 h 10 by car.
• Chao Por Khao Yai Shrine checkpoint at Pak Chong, on Thanarat Road (2090) — about 92–99 km from the villa, roughly 1 h 25 – 1 h 40, going around the park.
• The park states opening hours of 06:00–18:00, and the Thai page is more precise: that window is when you may pass in and out through the fee checkpoints.
• Thanarat Road runs 50 km through the park, and you may enter by one gate and leave by the other — one ticket covers entry and exit on a single day.
• Vehicles over 3.50 m tall, double-deckers and towed caravans are not admitted; small tour buses may only use the Noen Hom gate.

Fees: Thai visitors pay 40 baht per adult and 20 per child, with no charge for elderly or disabled visitors. For foreign visitors the park's own fee page prints two rates — 200 baht per adult generally, and 400 baht per adult (200 per child) specifically for the Noen Hom and Pak Chong entrances, which are the only two fee gates. Budget for 400 and check at the gate. A vehicle fee applies on top; the English scale lists 30 baht for a four-wheeled vehicle, the Thai page 50. You can pay at the gate or through the DNP e-ticket app, QueQ.

The seven official trails

1. Visitor Center to Kong Kaew Waterfall — 1.2 km, a 45-minute to one-hour loop from the hanging bridge behind the visitor centre. No guide needed. The obvious first walk.
2. Pha Kluai Mai campground to Haew Suwat Waterfall — 3 km one way, about 2 hours, no guide needed. Proper forest, and it ends at a waterfall.
3. Km 33 to Nong Phak Chi — about 3–4 km one way (the park's Thai and English pages disagree), 2½–3 hours. A ranger guide is required.
4. Dong Tiw to Sai Sorn Reservoir — 2.7 km one way, 1½–2 hours. Guide required.
5. Dong Tiw to Nong Phak Chi — about 5 km one way, around 3 hours. Guide required, and in the rainy season the Lam Ta Khlong stream crossing may not be passable.
6. Visitor Center to Haew Suwat Waterfall — 8 km one way, about 6 hours, guide compulsory, start no later than 10:00, and closed every year from 1 July to 31 August.
7. Thai–American Friendship Trail — 2 km circular, about 1½ hours, no guide needed.

Trails 1 to 5 and 7 may be started between 08:00 and 14:00; trail 6 must start by 10:00. You register at the visitor centre for the trail you want, and the park runs a guide service for the routes that require one — it publishes no price for it, so ask when you register. The park's own instruction is blunt and worth repeating: never trek on your own, keep to the trail, walk single file.

The waterfalls

• Haew Narok — the park's tallest at 150 m in three tiers, at the km 22 marker on Highway 3077, which makes it the natural target from the southern gate: about 67 km from the villa, roughly 1 h 05 – 1 h 20 by car. From the car park it is a 1 km walk, then a steep, narrow staircase descending 50 m.
• Haew Suwat — about 25 m, roughly 100 m from its car park, with a cave visible behind the falls when the water is low in the dry season. Through the park it is about 94 km from the villa (1 h 40 – 2 h); around the park via Pak Chong, about 117 km.
• Pha Kluai Mai — about 10 m, named for the red orchids that flower in the dry season, around April.
• Kong Kaew — small, and it marks the Nakhon Nayok / Nakhon Ratchasima boundary; it is the destination of trail 1.
• Swimming is forbidden at all four. In the rainy season the current at Haew Suwat is dangerous, and the park says so itself.

Wildlife without a night drive

The Nong Phak Chi observation tower is the reliable daylight option: a 20 m hide over grassland, a waterhole and salt licks, where sambar, barking deer and wild boar are common and elephants occasional. Park at the km 35 marker on Thanarat Road and walk about 1 km across the grassland — the park gives the distance but no walking time, so allow more than you think in the heat.

After dark, driving yourself around looking for animals is forbidden and carries a 500 baht fine. The park's own night safari is a ranger-driven pick-up with a spotlight: a 10 km route lasting about an hour, in slots at 19:00 and 20:00, at 600 baht per vehicle for up to eight people, booked and paid at the visitor centre service desk before 18:00 on the day. Wheelchair users are explicitly welcome. Bring no torch of your own and no flash.

Viewpoints, and one that is shut

Pha Diao Dai — the cliff platform reached by a short boardwalk trail — is the park's most photographed sunrise spot, and it is closed from 1 June to 30 September under the notice the park issued in May 2026. It is closed today. Khao Khieo, also called Pha Trom Jai, sits 600 m further on at 1,290 m and is listed as open, as is the km 30 viewpoint on Thanarat Road, which is wheelchair accessible and known for the dawn mist and the bats at dusk. Closures are seasonal and change: check the park's alerts page before you go.

The park's own safety rules, in short

• Elephants on the road: stop at least 30 m away, keep the engine running, no horn, no flash. At night keep your headlights on — hazard lights and indicators attract them. If one approaches, reverse calmly and wait for it to leave.
• A lone elephant does not mean the herd has gone, and you should not get out to photograph one.
• In the rainy season the park's own equipment list includes plastic leech socks, along with repellent, a torch, water and a bag for your rubbish.
• The park recommends that people with asthma, insect-bite allergies or high blood pressure do not walk the nature trails.
• No pets, no alcohol, no foam containers, no drones without permission, and feeding wildlife carries a fine of up to 100,000 baht.

Driving times are approximate, by car, outside peak traffic and with no stops; they come from OpenStreetMap-based routing, not from measured journeys. Add time for the queue at a national-park checkpoint.

Sources and last reviewed

Last reviewed 9 September 2026. Two caveats worth knowing: the park's own site prints conflicting foreigner and vehicle fees, and its English pages lag the Thai ones on closure notices — the Thai announcement is the current one. Trail closures and viewpoint closures are seasonal, so check the alerts page on the day.

• Khao Yai National Park — plan your visit, entry fees, hiking, night safari, places to go, safety and regulations, and alerts: khaoyainationalpark.com/en/plan-your-visit and its sub-pages (accessed 9 September 2026)
• Khao Yai closure notice for the Pha Diao Dai viewpoint and nature trail, 1 June – 30 September 2026, issued 20 May 2026: khaoyainationalpark.com/alerts (accessed 9 September 2026)
• Department of National Parks, Wildlife and Plant Conservation — Khao Yai park record: portal.dnp.go.th (accessed 9 September 2026)
• Distances routed from the Ban Na area with OSRM and Valhalla on OpenStreetMap data (9 September 2026)