🔄 Updated 21 Jun 2026
What makes this route fun is the way the mood shifts gradually as you go. The first stretch is busy city beaches like Bang Saen and Si Racha — lively, packed with food. Once you pass Rayong and cross into Chanthaburi, the sea gets quieter, the water clears up, and the crowds thin out. You finish with a riverside old town where you can wander all day. We laid it out as 3 days and 2 nights to keep it relaxed, but if you're short on time you can trim it to 2 days (skip Chonburi and head straight to Chanthaburi).
The route and drive times at a glance
Bangkok to Bang Saen is roughly 1.5 to 2 hours (via Motorway 7). From Bang Saen and Si Racha on to Chanthaburi is another 2.5 to 3 hours, passing Rayong on the way. All up, Bangkok to Chanthaburi is about 250 km. Drive it straight through with no stops and it's around 3.5 hours — but this plan is built around stopping to play along the way, so we spread it across several days.
- Easiest driving windows — weekday mornings have light traffic. Friday evenings and Sunday evenings get fairly heavy on the motorway, so build in extra time.
- Fuel and restrooms — there are plenty of large stations and rest stops along Route 344 (Ban Bueng–Klaeng) and the coastal Route 3.
- No private car? — you can take a minivan or coach from Bangkok (Mo Chit or Ekkamai) to Chanthaburi, but reaching the out-of-town beaches without a car is tough. It's best to rent a car once you're in Chanthaburi.
Book the activities in your Chanthaburi trip ahead
Booking online ahead on Klook or GetYourGuide is usually cheaper than the gate and skips the queue. Pick only the experiences you actually want — prices and availability are shown live on each site.
Day 1 — Bang Saen, Si Racha, then down to Rayong
The lively side of Chonburi
How to pick a seafood spot
Waterfront places that are busy with locals usually have fresher seafood and fairer prices than spots set up to catch tourists. Check the per-kilo price board before you order — especially for crab and prawns — and confirm the exact weight before it's weighed, so the bill doesn't blow up at the end.
Day 2 — Into Chanthaburi: Chao Lao Beach and Laem Sing
Today is where the mood shifts the most. Once you cross from Rayong into Chanthaburi, the sea gets quieter, the water clears, and the crowds thin out — perfect if you want a beach without the chaos. The Chaloem Burapha Chonlathit coastal road that runs along Chao Lao and Laem Sing is one of the most enjoyable sea-view drives in the whole eastern region.
The quiet Chanthaburi coast
Day 3 — Chanthaburi old town before heading back to Bangkok
Riverside old town, then home
Seafood and food stops along the route
The best part of this route is that you can eat the whole way, and each stretch has its own specialty. We've listed them in the order you'll hit them, working from Chonburi down to Chanthaburi, so you can pick where to stop as the trip flows.
Khao lam and Chinese sausage at Nong Mon Market (Chonburi)
Bang Saen's longtime souvenir pairing — fragrant grilled sticky rice in bamboo and Chinese sausage with a nice sweet-salty balance. Eat it on the road or take some home.
Seaside seafood at Bang Saen (Chonburi)
Restaurants lined up along the beach — order curry-powder crab, grilled prawns, and roe-stuffed squid, and eat with the sea breeze right there.
Food at Koh Loy, Si Racha (Chonburi)
Around Koh Loy there's a market and Si Racha seafood restaurants — fresh oysters are the signature of this area.
Seafood at Pak Nam Rayong and Ban Phe
A midway stop where the seafood is fresh and fairly priced — grilled sea fish, river prawns, blanched cockles. Go for the busy places first.
Sea crab around Kung Krabaen and Laem Sing (Chanthaburi)
On the Chanthaburi side the sea crab is fresh and usually cheaper than on the Chonburi side. Steamed crab and black-pepper crab are the dishes to try.
Seaside cafes at Chao Lao Beach (Chanthaburi)
Chaloem Burapha road has several cafes right on the water — sit with a coffee and look out over quiet Chao Lao. A good midday break.
Sen chan stir-fried with crab (Chanthaburi town)
The chewy thin rice noodle that's a Chanthaburi signature, stir-fried with crab meat and egg, with that smoky wok aroma. Don't miss it before you leave.
Old-style sweets at the Chanthaboon Waterfront Community
Walk the riverside old quarter and you'll find traditional Thai sweets — khanom khuang, salted-fish-roe egg cakes, and local snacks to sample shop by shop.
Where to base yourself
Stay in Rayong (first night)
Splits the Bangkok–Chanthaburi drive so you're not on the road too long. Plenty of hotels and resorts along Mae Ramphueng Beach and in town across different price levels.
Stay by the sea at Chao Lao or Laem Sing
Wake up to the sea right there. Great for anyone wanting a slower pace, with beachfront resorts where you can walk straight down to the water.
Stay in Chanthaburi town
Convenient if you plan to tackle the old town and waterfront community on your last morning — cafes and restaurants are within walking distance.
When's best for the beach
The east coast is good for swimming from around November to May — calm winds, clear water. The monsoon, roughly May to October, brings heavy rain and strong waves, so it's best to skip the water activities then. But even in the rainy season you can still happily hit the cafes, the old town, and the waterfalls.
Want the full Chanthaburi guide — the sea, the old town, and the food?
See the Chanthaburi guide →