Routes
Bangkok to Phetchaburi: the Town Everyone Drives Past on the Way to Hua Hin
Two hours from Bangkok, on the road that four million people a year take to the beach, and almost none of them get out of the car.
Published figures for Bangkok to Phetchaburi disagree widely — about 120 km and two hours in one guide, about 170 km and 2.5 to 3 hours in another. The route runs Highway 35 (Rama II Road) to Highway 4 (Phetkasem Road), meeting at the Wang Manao interchange about 84 km out. Tolls on the elevated sections of Highway 35 come to around 100 THB for a car.
Key facts
- Distance
- About 120 km in one guide; about 170 km in another — a 50 km spread
- Drive time
- About 2 hours (one guide); 2.5–3 hours depending on traffic (another)
- Route
- Highway 35 (Rama II Road), then Highway 4 (Phetkasem Road)
- Where the roads meet
- Wang Manao interchange, roughly 84 km from Bangkok
- Tolls
- Around 100 THB for a car on the elevated sections of Highway 35
- Worst time to leave
- Friday afternoon — the road out of Bangkok is slow
- On to Cha-Am
- 30–42 km further, about 35 minutes
Why the distance figures are 50 km apart
A 120 km figure and a 170 km figure for the same journey cannot both be straight-line measurements of the same two points. The likely explanation is the starting point: 120 km is consistent with a measurement from the western edge of Bangkok, and 170 km with one from the centre or the eastern side, where most hotels are.
For planning, the useful number is time rather than distance, and the honest range is two to three hours. Which end of it you get is decided almost entirely by when you leave: the elevated sections of Rama II Road move well outside the rush, and badly inside it.
Friday afternoon is specifically called out by the sources as slow on this road, for the obvious reason — it is the route to Hua Hin, and Bangkok leaves for the weekend.
The toll figure, which is actually available here
Unlike Motorway 7 on the eastern side, where we could not find usable toll figures, the Rama II route has a published figure: around 100 THB for a car on the elevated sections of Highway 35. It is a small amount in the context of a charter, but it is the kind of line item that turns up on an invoice, so it is worth knowing it exists and asking whether your quote includes it.
What is actually in Phetchaburi
This is a town with a royal hilltop palace, a set of cave temples, and some of the best-regarded Thai desserts in the country — and it gets a fraction of the visitors of the beach towns thirty minutes further on.
- Khao Wang (Phra Nakhon Khiri) — the hilltop palace complex, reached by a funicular or on foot, with views over the plain.
- Cave temples — Khao Luang cave among them, with its collapsed roof and shafts of light.
- The old town — teak shophouses and temples along the river, walkable in a morning.
- Desserts — Phetchaburi is known nationally for palm-sugar sweets. This is not a footnote; it is a reason people drive here.
How to use it
| Shape | Works because |
|---|---|
| A day trip of its own | Two to three hours each way is a long day but a feasible one, with four or five hours in town |
| A stop on the way to Hua Hin or Cha-Am | It is directly on the road, and it breaks a three-hour drive into two comfortable legs |
| A stop on the way to Kaeng Krachan | The park is in Phetchaburi province; the town is the natural staging point |
| Combined with Nakhon Pathom | Both are on the same corridor, and Nakhon Pathom is only an hour from Bangkok |
The middle option is the one most people should take. If you are already driving to Cha-Am or Hua Hin, stopping here costs you two hours of a day you were spending in the car anyway — and on a charter it costs nothing extra.
Booking
- Leave before 09:00 or after 10:30, and avoid Friday afternoon if the date can move.
- Ask whether tolls are included — around 100 THB is the published figure for this road.
- If Khao Wang is the point, note that the funicular has operating hours; check them for the day you travel.
- If this is a stop en route to the coast, say so, and we will build the timing around the onward leg.
Questions
How far is Phetchaburi from Bangkok?
The published figures disagree: about 120 km in one guide and about 170 km in another. The difference is most likely the starting point in Bangkok. For planning, use the time instead — two to three hours.
Which road goes to Phetchaburi?
Highway 35, Rama II Road, and then Highway 4, Phetkasem Road. They meet at the Wang Manao interchange about 84 km from Bangkok.
How much are the tolls?
Around 100 THB for a car on the elevated sections of Highway 35. That is a published figure for this route, unlike the eastern Motorway 7, where we could not find reliable toll data.
Is Phetchaburi worth stopping for?
Yes, particularly if you are already driving to Cha-Am or Hua Hin — it is directly on that road. Khao Wang hilltop palace, the cave temples, the old town and the palm-sugar desserts are the draw, and the town sees a fraction of the visitors the beach towns do.
When is the worst time to drive this road?
Friday afternoon, which the sources specifically flag as slow. It is the route Bangkok takes to Hua Hin for the weekend.
Sources
Figures on this page were checked against the following published sources on 2026-11-12. Operators change prices and hours; verify anything time-critical before you travel.
Price a Phetchaburi trip or a stop en route
If you are heading to Hua Hin or Cha-Am anyway, a stop here costs hours you were already spending in the car. Tell us the plan.
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