Prachin Buri to Kampong Thom Road Trip Guide

Your route from Prachin Buri to Kampong Thom follows the ancient trade corridor between the Gulf of Siam and the Mekong basin, a path that once connected Angkor to the port of Pattaya. Today, National Road 33 (Thai) merges into National Road 6 (Cambodian) after the Aranyaprathet–Poipet border crossing.

The drive covers roughly 350 kilometers, which typically takes 6–7 hours including border formalities. You'll traverse the Dong Phayayen–Khao Yai forest complex, a UNESCO World Heritage Site, before descending into the flat rice plains of Cambodia's Kampong Thom province.

Fuel stops are frequent on the Thai side, but once you cross into Cambodia, stations become sparser—fill up at Poipet or Sisophon to avoid range anxiety. Diesel prices in Cambodia average $1.05 per liter, about 10% cheaper than Thai rates; plan for around $30 in fuel costs for the entire trip.

The border crossing is open from 6:00 to 22:00, and you'll need a valid passport, vehicle registration, and a Cambodian visa (available on arrival for most nationalities). Expect 30–60 minutes for exit and entry procedures, especially during peak hours.

• Thai roads are well-paved with clear signage, while Cambodian sections from Sisophon onward have occasional potholes—drive cautiously.
• There are no toll booths on this route, but you'll pay a small fee for vehicle insurance at the border.
• Mobile connectivity is reliable in Thailand but drops in rural Cambodia; consider a local SIM for data.

As you leave Prachin Buri, the highway skirts Khao Yai National Park, where elephants sometimes cross the road—stay alert for wildlife signs.

In Cambodia, the landscape shifts to endless rice paddies dotted with sugar palms. The town of Kampong Thom serves as the gateway to the pre-Angkorian temple complex of Sambor Prei Kuk, a UNESCO World Heritage Site featuring more than 100 brick sanctuaries dating to the 7th century.

Just before reaching Kampong Thom, pull over at the Stung Sen River bridge to watch villagers fishing with traditional conical nets—a scene unchanged for centuries.

Road conditions vary: Thai motorways are multi-lane with frequent rest stops, while Cambodian roads are narrower with heavy truck traffic. Keep a 2-second following distance and use headlights during the day for visibility.

For families, the stretch around Aranyaprathet has a large amusement park called Wonder World, with rides and a dinosaur-themed water park—a good break for kids. Pet owners: most guesthouses in Kampong Thom accept pets, but check in advance; the border crossing requires a pet health certificate.

Combat fatigue by stopping every 2 hours; notable rest areas include a petrol station with a large canteen just east of Kabin Buri, and a riverside picnic spot at the Kompong Kdei bridge.

• Hydrate often; the tropical climate can dehydrate drivers quickly.
• Carry a portable charger—rural areas have limited electricity.
• Download offline maps before crossing.