Koh Rong to Banlung Drive: Road Trip Secrets

Koh Rong, a tropical island off Cambodia's coast, meets Banlung, a highland town near the Vietnamese border, via one of the country's most varied overland routes. This drive covers over 400 kilometers and climbs roughly 1,000 meters in elevation, taking you from palm-fringed beaches to volcanic soils and dense rainforests. The journey begins with a ferry from Koh Rong to Sihanoukville, then follows National Road 4 north toward Phnom Penh before turning northeast on National Road 19 to Banlung.

This guide provides practical information on driving times, road conditions, and notable stops, helping you decide whether the drive is worth your time. It covers everything from fuel costs to family-friendly attractions and pet-friendly accommodations. Use the how to find the best stops and hidden gems between cities for additional planning tips.

The landscapes shift dramatically: coastal plains give way to the broad, fertile floodplains of the Mekong, then ascend to the rolling hills and volcanic plateaus of Ratanakiri province. The area around Banlung features crater lakes, waterfalls, and the Virachey National Park, offering trekking and wildlife viewing. Along the way, local commerce thrives in towns like Kampong Cham and Kratie, where markets sell fresh fruit, vegetables, and traditional crafts.

Things to do between Koh Rong and Banlung include visiting the bamboo bridge at Kampong Cham (rainy season only), spotting Irrawaddy dolphins near Kratie, and exploring the Yeak Laom volcanic lake near Banlung. These stops provide a taste of Cambodian rural life and natural beauty. The UNESC World Heritage site of Preah Vihear Temple, though slightly north of the route, can be a detour for history enthusiasts.

Road quality varies: most of National Road 4 is in good condition, but the eastern portion of National Road 19 may have potholes and unsealed sections. Drive cautiously, especially during the rainy season (June–October) when roads can be slippery. Avoid night driving as street lighting is scarce and animals are common. Rest zones are available in larger towns, but you can also pull over at scenic viewpoints. Plan for stops every 2-3 hours to combat fatigue.

For families, the route offers child-friendly attractions like the Kratie Dolphin Pool, which is easy to access and fascinating for kids. Many hotels in Banlung have family rooms and grounds, and some have swimming pools. For pet travelers, certain accommodations accept pets, but confirm in advance. Always carry water and snacks, as some stretches have limited services. Is it worth driving Koh Rong to Banlung? If you enjoy diverse scenery and cultural encounters, absolutely.

How long to drive Koh Rong to Banlung? Expect 12–15 hours of driving time, not counting the ferry or extended breaks. The route includes well-paved highways and some rural roads, but conditions can vary, especially in the final stretch near Banlung. Fuel stations are plentiful along National Road 4 and around Phnom Penh, but become sparser once you pass Kratie on National Road 19, so fill up before leaving the city.

• Ferry: Multiple operators run daily between Koh Rong and Sihanoukville; the ride is about 45 minutes.
• Tolls: No tolls on Cambodian national roads, but some bridges may have small fees.
• Fuel economy: Your vehicle's fuel efficiency and cost will depend on your vehicle; expect to pay around $1.50 per liter for petrol in Cambodia.
• Roads: National Road 4 is well-maintained with moderate traffic; National Road 19 is less wide but paved consistently.