Trat to Can Gio: Scenic Vietnam Road Trip Guide

This route follows the historic coastal highway that once served as a vital supply line during the Vietnam War, now connecting Thailand's Trat province to Vietnam's Can Gio mangrove forest. The journey spans approximately 380 kilometers, weaving through border crossings and tropical lowlands.

Driving time depends heavily on border procedures and road conditions; expect 8-10 hours without overnight stops.

Key permits are required for entry into Can Gio's core mangrove zone, obtainable at the visitor center.

Border crossing at Hat Lek-Cham Yeam is open daily from 6:00 to 22:00.

The drive reveals a dramatic shift from Thailand's cashew plantations to Cambodia's Kampot pepper farms, which flourish in the region's mineral-rich soil.

UNESCO World Heritage Site: The pre-Angkorian temple complex of Phnom Da, located near Angkor Borei, lies a short detour inland from the route.

The final stretch crosses the Mekong Delta with its intricate system of canals, leading to Can Gio's UNESCO-listed biosphere reserve, a vast mangrove forest ecosystem.

Local commerce along the way includes fresh seafood markets in Kampot and Sihanoukville, where day-caught crab and prawns are sold alongside roadside grills.

In Can Gio, floating markets offer a variety of tropical fruits, including durian, mangosteen, and rambutan.

National Highway 3 from Trat to Hat Lek offers good two-lane roads with occasional potholes. After crossing into Cambodia, National Road 48 continues to Kampot, with ongoing construction expanding sections to four lanes.

• Fuel costs: Petrol in Thailand ~35 THB/liter; in Cambodia ~4,000 KHR/liter; in Vietnam ~24,000 VND/liter. Prices fluctuate.
• Exchange: Thai Baht widely accepted near border, but Cambodian Riel and Vietnamese Dong needed further.
• Tolls: No expressway tolls on this route; but ferry to Can Gio costs ~50,000 VND per car.
• Border fees: Visa for Cambodia (if driving) varies by nationality; ensure car paperwork (carnet de passage) for both countries.

The most efficient fuel strategy is to fill up in Trat before departure, as Cambodia has fewer fueling stations.

Mobile connectivity can be spotty in coastal stretches; download offline maps.

Road quality varies: most of the route is paved but narrow in rural sections, and livestock may cross unexpectedly. Weather plays a role: the dry season (November to April) offers dusty, sunny drives, while the wet season (May to October) brings heavy rains that can flood low-lying areas.

Rest zones are essential: frequent stops at highway cafés, gas stations, and local markets help mitigate fatigue. Aim for a 15-minute break every 2 hours.

Pet-friendly framework: Many accommodations along the route, particularly in Kampot and Sihanoukville, accept pets, but always confirm in advance. Rest stops are mostly open-air, suitable for stretching.

Family suitability: Kid-friendly attractions include the Kampot Riverfront with its gentle boat rides, and the Can Gio Mangrove Biosphere Reserve's nature trails, which offer educational placards.

Hidden off-route spots: Just before Sihanoukville, veer off to Otres Beach for a quiet lagoon with less development.

For more on discovering offbeat places, refer to this guide on how to find the best stops and hidden gems between cities.