Phetchabun is a province in northern Thailand, and its best-known corner is the hill country of Khao Kho, where visitors come for cool air, morning mist, viewpoints and a large wind farm. Higher up, the ridge of Phu Thap Boek has Hmong farms and glass-house stays above the clouds, and Si Thep is a UNESCO World Heritage ancient town elsewhere in the province. The 12Go bus and van route we checked from Bangkok ends in Phetchabun city, so this guide is mostly about how to link these places.
This guide uses only facts we could check on 16 October 2026 on the sources listed below, and it says where they disagree. For hotel choices, read where to stay in Phetchabun, or the Thai version, ที่พักเพชรบูรณ์.
What Phetchabun is like
Wikipedia describes Khao Kho as a district of Phetchabun province, named after a peak in the Phetchabun Mountains, which Wikipedia says was named either after a kind of palm or after the Ceylon oak, both known as kho in Thai. It was set up as a minor district in 1984, and the same page says that between 1965 and 1984 this mountainous area was a battleground between the Thai communist party and the Royal Thai Army. That history is why the summit has a memorial and a military museum today. Wikipedia also says Khek Noi sub-district has the largest Hmong community in Thailand.
An independent national-parks guide, which is not a government site, calls Khao Kho a very commercialised park with hundreds of resorts, popular for cooler weather, morning mist over the valleys, viewpoints, a huge wind farm and temples. Plan for a drive-and-stop trip, not a hiking trip. If you want a more classic ancient-city trip, read our guide to Sukhothai, which sits on the other side of Phitsanulok.
Khao Kho: viewpoints, wind farm and memorial
The national-parks guide lists the main stops along the road through the hills. At the summit, 1,143 m above sea level according to that guide, are a marble memorial honouring those who died in the 1968 to 1981 conflict and a military museum about 1.3 km away, with aircraft, a helicopter and other vehicles outdoors and uniforms and photos indoors. The road to the summit is a narrow one-way loop. A viewpoint and market sits along the main road and faces west.
The wind farm is the other landmark. The guide says it has 24 turbines, each 110 m tall, generating 60 MW, at about 1,020 m, and that shuttle buses run from a local market. Pino Latte, a cafe and viewpoint at 920 m, is described as one of the most visited places in the area. The Blue Sky Resort's own attractions page adds Wat Phra That Pha Kaew, a temple among the mountains, a Hmong swing flower garden near the turbines, and strawberry farms around Khao Kho.
The sea of mist is the reason many people come. The Blue Sky Resort says the mist spot at the Rattanamai reservoir is about 20 km from its door, that you can reach it in about 30 minutes if you leave at about 06:30, and that you see a beautiful mist only if you are lucky and there is no wind. Another Khao Kho hotel page says the mist can normally be seen on days without strong wind. Treat the mist as a bonus, not a promise.
We could not verify entrance fees or opening hours from an official page. The independent guide gives figures for the Than Thip Waterfall, but it is not an official source, so check with the park or your hotel before you go.
Phu Thap Boek
Phu Thap Boek, in Lom Kao district, is a mountain ridge near the border with Loei. Wikipedia describes the mountain as about 1,794 m high, with farms on its slopes where the climate suits cabbage, and says the villagers are mostly Hmong who came from northern Thailand. It also notes that the mountain has been overrun by allegedly illegal resorts and restaurants, and that the article itself mixes up two nearby mountains, so treat its figures with care. A Khao Kho resort calls it one of the top spots, the highest mountain in Phetchabun province, mostly farmland for cabbages and cauliflowers. A hotel on the ridge puts itself at more than 1,500 m.
Hotels here market cliff-edge glass houses with views of the mist and sunrise. We did not find an official notice about road conditions or seasonal closures for the ridge, so ask your hotel about the road and the weather on the day you travel, especially if you are driving up after dark. One hotel on the ridge also warns that its Facebook page has problems, so confirm the booking channel before you pay.
Si Thep, Nam Nao and Phetchabun town
Si Thep Historical Park is the cultural highlight. Wikipedia says Si Thep was one of the largest known city-states of the central Thai plains in the first millennium, inhabited from about the third to fifth century until the thirteenth, and that on 19 September 2023 it was inscribed on the World Heritage List as The Ancient Town of Si Thep and Its Associated Dvaravati Monuments. Its structures include Prang Si Thep and Prang Song Phi Nong inside the inner city, and Khao Khlang Nok outside it, described as the largest ancient monument at Si Thep. The Fine Arts Department manages the park and charges an entry fee; we could not verify the fee or hours, so check before you go. The site is in Si Thep district, a separate trip from Khao Kho, so check the distance on a map.
Nam Nao National Park is the nature stop. Wikipedia calls it a protected area in Phetchabun province, and an independent park guide says its headquarters are 50 km east of Lom Sak, that it averages 800 m in elevation and stays comfortably cool all year, and that it is closed for a month in June each year. Confirm that with the park before you plan a visit. Phetchabun town, the provincial capital, lies 340 km north of Bangkok according to Wikipedia, in a valley beside the Pa Sak River. A town hotel lists Wat Mahathat Phetchabun and the Phetchabun Intrachai Archaeological Hall among nearby attractions.
Getting to Phetchabun and Khao Kho
Most routes start by getting to Phetchabun city or Lom Sak, then driving into the hills. The 12Go page for Bangkok to Phetchabun is the easiest way to see the bus and van options.
| From | How | What the sources say |
|---|---|---|
| Bangkok to Phetchabun city | Bus or van on 12Go | The page we opened in a browser on 16 October 2026 listed three companies, 10 departures a day, 300 km and a fastest time of 6 hours |
| Bangkok to Khao Kho | Drive | The Blue Sky Resort says about 6 hours; the national-parks guide says about 400 km |
| Phitsanulok airport to Khao Kho | Hire car | The Blue Sky Resort says about 120 km and 1.5 hours; the guide says about 120 km |
| Phetchabun town to Khao Kho | Drive | One hotel says 48 km; the guide says about 50 km |
| Bus to Lom Sak, then local songtaew | Public transport | The Blue Sky Resort says this works; the national-parks guide says there is no public transport to Khao Kho from nearby towns |
Where the sources disagree
| Item | What we found |
|---|---|
| Bangkok to Phetchabun | 300 km on the 12Go page against 340 km on Wikipedia |
| Public transport to Khao Kho | A hotel says bus and songtaew; a park guide says none |
| Phu Hin Rong Kla | Wikipedia lists the park in Loei and Phitsanulok, yet its Phu Thap Boek page says it overlaps Phetchabun |
The guide says Khao Kho gets very busy at weekends and holidays and that traffic can be slow, especially on December weekends. Book hotels early for those dates and start drives before the crowds.
Booking the trip
The 12Go page for Bangkok to Phetchabun listed three companies (12Go Transport, Thailand Limo by Datum and Transport Co) when we opened it in a browser on 16 October 2026, with 10 departures a day, a distance of 300 km, an earliest departure of 8:00 AM, a latest of 10:00 AM and a fastest time of 6 hours. We link it as a convenient place to compare, and some links on this site may earn us a commission; this does not change the times you see. The route ends in Phetchabun city, not in Khao Kho or on Phu Thap Boek, which are separate drives. We do not repeat 12Go's prices here because they change daily.
The seasons
A Khao Kho hotel page describes three seasons. Winter runs from November to February, with clear sky, very cold mornings and nights and strong afternoon sun. The rainy season runs from July to October, with an average of 19 to 29 degrees, humid air and frequent mist. The hot season runs from March to June. The national-parks guide advises warm clothes in November and December, and says a sweater helps the rest of the year. Nam Nao's guide mentions frost from November to January. Wikipedia's page for Phetchabun town says April is very hot, with an average daily high of 37.2 degrees, and that the monsoon runs from late April through early October. Check the Thai Meteorological Department forecast for your dates, and our guide to Thailand's best time by region.
Where to stay
The stay guide compares three areas, with every hotel fact checked on the hotel's own website:
- Khao Kho district: seven hotels, from small private houses to larger resorts, for the mist, viewpoints and wind farm.
- Phu Thap Boek: cliff-edge glass houses on a high ridge.
- Phetchabun town: three simple hotels, a practical base where the bus route ends.
Open where to stay in Phetchabun for the area table and the 12 hotel cards. We found no hotel in Lom Sak with an official website we could verify, so none is listed there.
Nearby destinations
- Loei: the mountain province next door; Dan Sai district of Loei borders Khao Kho district
- Sukhothai: the old capital and its historical park, a separate trip
- Isaan: Highway 12 from Lom Sak runs east towards Khon Kaen through Nam Nao
- Khao Yai: another highland national park, but a long drive to the south; check the distance on a map
- Getting around Thailand
- Thailand overview
- Phitsanulok: Wat Yai, Nan River and the gateway to Sukhothai
- Khon Kaen: Isaan city with silk, dinosaurs and Ubolratana Dam
FAQ
How do I get from Bangkok to Khao Kho?
There is no direct public route that we could verify. You can take a bus or van to Phetchabun city, which 12Go lists with about 6 hours as the fastest time, and then drive about 48 to 50 km to Khao Kho. Or you can drive all the way: The Blue Sky Resort says about 6 hours from Bangkok. Sources disagree on whether buses reach Khao Kho itself.
When is the best time to see the sea of mist at Khao Kho?
Winter, from November to February, is the cold season a Khao Kho hotel describes, and the same page says mist also appears often in the rainy season. The mist depends on wind: a hotel says it is normally seen on days without strong wind, and another says you need luck. Plan several mornings if mist matters.
Is Phu Thap Boek in Phetchabun?
Yes. Phu Thap Boek is a mountain in Lom Kao district of Phetchabun province, near the border with Loei, according to Wikipedia. The same article notes that it mixes up two nearby mountains, so check any height you read.
Is Si Thep a UNESCO site?
Yes. Wikipedia says it was inscribed on the World Heritage List on 19 September 2023 as The Ancient Town of Si Thep and Its Associated Dvaravati Monuments. We could not verify opening hours or fees, so check with the Fine Arts Department.
Is Phu Hin Rong Kla in Phetchabun?
Sources disagree. Wikipedia's page on the park lists Loei and Phitsanulok provinces, while its Phu Thap Boek page says the park surrounds that mountain and overlaps Phitsanulok and Phetchabun. We do not list it as a Phetchabun attraction.
Do I need a car?
Almost certainly. An independent guide says getting around Khao Kho is not possible without a car because the distances between attractions are relatively big. A hotel says a bus to Lom Sak and a local songtaew works, so ask your hotel how guests really arrive.
Is Nam Nao National Park open all year?
An independent park guide says it is closed for a month in June each year. We could not confirm that on an official page, so ask the park before you plan a visit.
Official sources and further reading
- Khao Kho National Park (independent national-parks guide, not a government site)
- Nam Nao National Park (independent national-parks guide)
- Khao Kho district (Wikipedia)
- Phu Thap Boek (Wikipedia)
- Si Thep Historical Park (Wikipedia)
- Phetchabun (Wikipedia)
- Phetchabun province (Wikipedia)
- Phu Hin Rong Kla National Park (Wikipedia)
- 12Go: Bangkok to Phetchabun
- The Blue Sky Resort Khao Kho: journey and attractions
- Khaokho Boutique Resort: seasons
- Feung Fah Litz, Phetchabun
- HOP INN Phetchabun
- Thai Meteorological Department
Prices, schedules and entry rules change. Figures here are approximate as of 2026; always confirm on the official or operator page before you book. Spotted something out of date? Tell us.
