Kep to Banlung Drive: Jungle, Coast, and Crater Lakes

Driving from Kep to Banlung crosses Cambodia's coastal plains, the Mekong basin, and ends in the volcanic highlands near the Laos border. The route spans approximately 600 kilometers, typically taking 9–11 hours without overnight stops.

One distinct quirk: the road numbers change from National Road 3 to National Road 7 as you pass through Phnom Penh, and many remote stretches lack reliable mobile coverage.

Fuel stops are frequent along National Road 5 and 6, but once you turn onto National Road 78 at Skuon, stations become sparse – fill up before leaving Kampong Thom. Diesel prices average around 4,000 riel (US$1) per liter.

Toll fees apply only on the Phnom Penh–Skuon expressway, costing US$3 per car.

• Kep to Banlung driving time: expect 9–11 hours with short breaks.
• To save time, consider avoiding Phnom Penh rush hours (7–9 am, 5–7 pm).
• Mobile data works in towns but not in rural stretches.

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

Kep's crab market gives way to Cambodian countryside – rice paddies, sugar palms – before Phnom Penh's urban sprawl. North of Skuon, the road sweeps past the sacred Phnom Santuk, a hilltop pagoda.

UNESCO-listed Preah Vihear temple (11th century) is a divertible detour: from Beng Mealea, you can reach it on a 90-kilometer paved road. The stunning Koh Ker temple group, also UNESCO-listed, requires a 20-kilometer gravel path off NR68.

Local commerce along the route includes roadside stands selling durian in Kampong Cham and grilled chicken near Skuon. In Banlung, visit the Yeak Laom Volcanic Lake, a crater formed 4,000 years ago, and the nearby ethnic minority villages.

Infrastructure quality varies: national roads are paved but often lack lane markings; country roads can be pot-holed. Drive cautiously after rain, especially on laterite stretches leading to Banlung.

Family stops include the Kampi Dolphin Pool (Mekong River) and the Bousra Waterfall. Pet-friendly stops are sparse, but many guesthouses accept pets – always call ahead.

Climatic conditions: the dry season (Nov–Apr) offers blue skies and cool mornings; the wet season (May–Oct) brings mudslides on mountain roads. For fatigue management, plan breaks every 2 hours at designated rest stops near NR5 and NR78, where you'll find basic refreshments.

Local weather unpredictability: always carry water and check weather forecasts.