Khao Sok from Phuket by Car: Day Trip or Overnight?

Short answer

Yes, a rental car gets you to Khao Sok. The park lies off the main highway on the mainland, east of Phang Nga on the way towards Surat Thani. You cross the Sarasin bridge, follow highway 402 off the island and continue across the province on sealed roads.

Day trip or not?

Our own rule for day trips from Phuket by car is simple: if the drive one way takes more than about two hours, stay the night. National parks deep inland fall on the overnight side of that line. We have not measured the drive to Khao Sok, so check it in a map app before you decide, and be honest about the number it shows.

Doing it in one day is possible, but it is a long day. You leave before dawn, spend a few hours in the park and drive back in the dark, which is the part of the trip we like least. With a night near the park you see it in the morning light and drive home rested.

What that means for the car

Take petrol, not an electric car. Beyond the bridge the charging network thins out and the distances get long, so a range calculation that works on the island stops working on the mainland.

Comfort counts on a long road. For two people a crossover is easy on the back and sits higher among lorries; a family or a group of friends with bags is better off in a minivan, where nobody spends hours with a backpack on their knees. Before you leave, run the air conditioning for a few minutes and test the wipers: mainland rain arrives quickly, and lorry spray blanks the windscreen in a second.

Check the fuel grade on the sticker by the filler flap before the first stop. The wrong fuel is paid for separately, and a mistake at a village pump is the kind of problem that ends a trip.

Mind the speed on the open highway too. Mainland cameras work, and the fine goes to the rental company, which takes it off the deposit weeks after you have flown home.

If you plan Khao Sok, tell us in chat before the rental starts. We agree leaving the island in writing, and the car comes to your hotel or villa at any hour: automatic, first-class commercial insurance, refundable deposit, the total for your dates fixed in chat. Send the dates on WhatsApp or through the booking form.

Step by step before you go

Most of what goes wrong on a mainland trip is decided on the island. These few minutes of preparation matter more than the route.

• Get written consent to leave the island — without it the insurance stops at the bridge
• Carry passport, national licence and IDP together — the IDP is valid only with the licence, and posts on the mainland check documents
• Fill the tank before the Sarasin bridge — do not start the mainland on a half-empty tank
• Keep small notes in cash — toll gates and roadside kitchens do not take cards
• Stop every ninety minutes — large highway stations have a toilet, coffee and a shop

Day trip or overnight: how to decide

Look at the drive time first. Up to about two hours one way, a day trip is comfortable. Beyond that the hours in the car start eating the hours in the park, and Khao Sok is not a place to see in a hurry.

Keep the plan to one destination plus one stop. A park, a waterfall and a lunch halt sound fine on a map, but each extra stop pushes the return later into the evening. On the mainland that means the dark, lorries and scooters on the shoulder.

What you lose by rushing is the reason to go. Parks like this are best early in the day, before the heat. Arriving at noon and leaving at three gives you the drive, not the forest. If your dates are short, Phang Nga or Khao Lak gives a full day at a shorter distance.

Staying over changes the whole trip: the park in the cool early hours, a daylight drive home, no race against sunset.

The drive back in the dark

Coming back after sunset is the hardest part of any long trip from Phuket. You are tired, oncoming lorries run on main beam, and motorcycles without lights ride on the verge. On winding stretches through the limestone hills the sightlines are short, so sit behind the lorry and wait for the straight.

In the cooler months mist settles in the mainland hills, and on bends you may see only a few dozen metres. Dipped beam, lower speed, more distance. Our notes on driving at night cover the island roads for the last stretch home.

Related questions

For a shorter mainland day, see Phang Nga from Phuket by car or our Phuket to Khao Lak day trip. Before any of them, read about the Sarasin bridge and about leaving Phuket in a rental car.

Cheow Lan lake: driving on to the dam

Cheow Lan is the reservoir of the Ratchaprapha Dam, also spelled Rajjaprabha, in Ban Ta Khun district of Surat Thani province. The Electricity Generating Authority of Thailand runs the dam, and the reservoir covers about 185 square kilometres between limestone hills.

From the Khao Sok side the road is Highway 401 towards Surat Thani. The turning to the dam is near Ban Ta Khun, and a side road of roughly 15 km leads from it to the dam and the pier, so the lake is a further stretch beyond the park.

That is one more reason to plan the lake with a night on the mainland. The boats on the lake leave from the pier at the dam; ask there where cars are left for the day. Agree the trip in chat before the rental starts, as for any drive off the island.

The drive measured: road, distance, time

The usual way from Phuket to Khao Sok is Highway 402 north over the Sarasin bridge, Highway 4 north along the coast past Khao Lak to Takua Pa, then Highway 401 east into the hills to the park entrance. An OpenStreetMap route planner puts the entrance about 125–130 km from the Sarasin bridge, close to 1 hour 45 minutes in clear traffic, driving straight through.

From the beach areas, add the island part. The same planner gives about 2 hours 40 minutes from Patong (about 175 km), 2 hours 30 from Phuket Town, 2 hours 50 from Kata and 2 hours 10 from the airport. Every beach base is above the two-hour line described above, which is why Khao Sok works better with a night on the mainland.

For Cheow Lan Lake, add about an hour from the park entrance: around 50 km further east on Highway 401, then the side road to the dam. From Patong that comes to about 240 km and close to 3 hours 45 minutes each way at the wheel.