Sihanoukville to Samraong Road Trip: A Comprehensive Guide

The coastal city of Sihanoukville links to the northern town of Samraong via National Highway 4 and then National Road 68, a journey of roughly 650 kilometers. The route passes through Cambodia's central plains, offering a transition from tropical coast to inland countryside.

Historically, the highway served as a vital supply line during the Khmer Rouge era, and today it remains a key artery for freight and local travel. Driving the full distance typically takes 10 to 12 hours, depending on stops and traffic, making it a full-day commitment.

For those considering the trip, here's a quick reference of the essentials:

Road safety on NH4 is generally good, but NR68 has limited lighting and occasional livestock crossings, so avoid night driving on that section. Petroleum availability is critical: plan refuels at Sihanoukville, Kampong Speu, Phnom Penh, and Sisophon (before the final stretch to Samraong). For families, the route includes several child-friendly stops such as Kirirom National Park's picnic areas and the Cambodia Railway Museum in Phnom Penh.

• Pet-friendly framework: Many hotels in Sihanoukville and Samraong accept pets, but countryside guesthouses rarely do. Carry a pet carrier and visit local veterinarians in major towns for any needs.
• Fatigue management: Schedule breaks every 2-3 hours. Notable rest zones include the NH4 rest stop near the Skun interchange and the green, shaded picnic spot at the Stung Pursat River crossing.
• Hidden off-route spots: A 20 km detour before Pursat leads to the Phnom Kulen Waterfall, often overlooked by tourists. Similarly, a small road 10 km south of Kandieng village reveals ancient pre-Angkorian temple ruins.

The best way to uncover such hidden gems is to use how to find the best stops and hidden gems between cities, which offers practical techniques for spontaneous discoveries.

Is it worth driving Sihanoukville to Samraong? For adventurous travelers, yes — it's a genuine cross-section of Cambodia's diverse geography and culture, far more rewarding than flying between the coasts. Things to do between Sihanoukville and Samraong are plentiful, from hiking Kirirom to exploring Phnom Penh's vibrant streets and the ancient temples near Skuon.

The route's landscapes shift dramatically: from Sihanoukville's palm-fringed beaches to the Cardamom foothills, floodplains near the Tonle Sap, and eventually the dry, forested savannas approaching Samraong. The best stops Sihanoukville to Samraong include Kirirom National Park (about 60 km from Sihanoukville), famous for its pine forests and waterfalls.

UNESCO World Heritage Sites are not directly on the route, but a detour of 50 km east of Phnom Penh reaches the ancient temple complex of Sambor Prei Kuk (listed in 2017). For a quick cultural immersion, the capital itself offers the Royal Palace and National Museum, both easily accessible from NH4.

Local markets in Oudong and Battambang (accessible via a short detour from NR5) showcase rural Cambodian commerce: fresh produce, grilled meats, and traditional woven textiles. The region is known for its palm sugar production, and roadside stalls sell it alongside tropical fruits in season.

Climatic conditions shape the journey: the dry season (November to April) brings dusty roads and clear views, while the wet season (May to October) turns the landscape lush but may cause minor flooding on low-lying sections of NR68. The route aesthetics peak just after the rains when waterfalls are full.

Route NH4 is a divided highway with two lanes in each direction, while NR68 is a two-lane rural road. The road surface is generally in good condition, but potholes and unmarked speed bumps appear near villages on NR68. Cellular coverage is intermittent between towns, so download offline maps beforehand.

• Fuel stations are available every 50-70 km on NH4, but sparse on NR68 — always fill up at major towns like Kampong Speu or Pursat.
• Tolls: NH4 has a toll around Phnom Penh (approx. 10,000 KHR), while NR68 has no tolls.
• Rest stops with basic sanitation exist at highway rest areas, but some charge a small fee (1,000-2,000 KHR).
• How long to drive Sihanoukville to Samraong? Approximately 10-12 hours, excluding extended stops.