Phitsanulok to Kampong Thom: Full Road Trip Guide

The drive from Phitsanulok to Kampong Thom begins with a crossing of the Phetchabun Mountains via Route 12, a major gateway between Thailand and Cambodia. The route spans approximately 600 kilometers, with the border at Chong Chom/O Smach serving as the midway point.

Phitsanulok, home to the famous Phra Buddha Chinnarat, sits at the Nan River's edge, while Kampong Thom, a former Khmer capital, lies near the Stung Sen River. The journey passes through three ecological zones: Thai lowlands, the Dangrek Range, and Cambodian plains.

This guide covers road conditions, fuel, food, and attractions, ensuring you know what to expect before you go.

Route 12 (Thai Highway 12) runs from Phitsanulok to the border, passing through Lom Sak and Chum Phae. After crossing into Cambodia, National Road 6 connects to Kampong Thom. As of 2025, most of the route is paved, with the Cambodian side undergoing upgrades.

Driving times vary due to border procedures and road conditions; budget at least 11 hours of driving, excluding stops. Checkpoints at Chong Chom/O Smach are open daily from 6:00 to 22:00 (Thai time).

• Fuel stations every 50-100 km on Thai side, sparse in Cambodia; fill up before border.
• Currency exchange at border; a Cambodian insurance card is mandatory.
• Border crossing costs: visa fees if applicable, plus small fees for vehicle paperwork.

How long to drive Phitsanulok to Kampong Thom? Typically 11-13 hours, but plan for delays. Is it worth driving Phitsanulok to Kampong Thom? For independent travelers wanting flexibility, yes; otherwise, buses and flights may save time.

For planning stops, see how to find the best stops and hidden gems between cities.

The Thai segment winds through the Phetchabun mountain range, offering views of national parks like Phu Hin Rongkla and Nam Nao. Once in Cambodia, the landscape flattens into rice paddies, with stops like Samraong and the ancient temple complex of Koh Ker nearby.

Kampong Thom province holds pre-Angkorian ruins at Sambor Prei Kuk, a UNESCO World Heritage Site known for brick temples dating from the 7th century. The site is a must-see for history buffs and lies 25 km from the town center.

Between cities, local markets in Chum Phae and Samraong sell regional snacks, and roadside stalls offer fresh coconut water and grilled meats. The best stops Phitsanulok to Kampong Thom include Phu Hin Rongkla, Prasat Muang Singh (a Khmer temple), and the Sambor Prei Kuk complex.

Climate perspective: The route is hot and humid year-round, with a dry season (Nov-Feb) offering the most comfortable travel. The rainy season (Jun-Oct) turns some dirt roads in Cambodia into mud, but the paved sections remain passable.

Things to do between Phitsanulok and Kampong Thom include visiting waterfalls like Kaeng Sopha in Phitsanulok, cycling around Kampong Thom's pepper fields, and trying local Kampuchea noodles at the Night Market.

Both sides have varying road quality; expect potholes on Cambodian roads and cautious driving in mountainous sections. Speed limits are 90 km/h max, and seatbelts are required. Pet-friendly accommodations are scarce but exist in Phitsanulok and Kampong Thom; check via booking platforms.

For families, landmarks like the Phitsanulok Zoo and the O Smach Market offer breaks. Khao Yai National Park is a detour, though it adds hours. Rest areas are more frequent in Thailand; in Cambodia, use fuel stations as rest stops.

Fatigue management is critical; plan a 30-minute break every 2 hours. The border town of O Smach has hotels if you prefer to split the drive. On the Cambodian side, the highway has few rest stops, so prepare supplies.

• Emergency numbers: Thailand 1669, Cambodia 119.
• Roadside assistance: Thai Auto Club available at border; in Cambodia, regional mechanics.
• Driving at night is inadvisable due to unlit roads and large trucks.