Khao Yai to Ha Tien: Road Trip Guide

Begin your drive on Route 304, which winds through the lush foothills of Khao Yai National Park, where elephants occasionally cross the highway. This road trip spans 800 kilometers and typically takes 11 hours of pure driving time, but plan for two days to savor the journey.

Crossing into Cambodia via the Aranyaprathet–Poipet border, you'll trade Thai asphalt for Cambodian National Road 5, passing rice paddies and sugar palm trees. End at Ha Tien, Vietnam, a coastal town near the Gulf of Thailand.

Here's a quick overview of key distances and times:

For tips on uncovering hidden gems along the way, see how to find the best stops and hidden gems between cities.

Fuel prices in Thailand average 35 baht/liter; in Cambodia, 4,000 riel. Budget around 3,000 baht for fuel for the entire trip. Tolls on Thai highways will cost about 200 baht total.

• Border crossing: Aranyaprathet–Poipet, open 6am–10pm.
• Visa on arrival for Cambodia: $30, bring passport photos.
• Cambodian insurance: $10 for a week, mandatory at border.

Several toll booths on Route 304 and National Road 5; keep small bills. The route is well-paved but expect some rough patches after Phnom Penh.

Road quality is generally good, but watch for livestock and unlit vehicles at night. Traffic rules in Cambodia are lax; defensive driving is key. Rest stops along Thai highways are every 50 km; in Cambodia, they're scarce, so plan fuel and bathroom breaks at cities like Battambang and Phnom Penh.

• Family-friendly: Safari World near Khao Yai, and Angkor National Museum in Siem Reap (if detoured).
• Pet-friendly: Many Thai hotels accept pets; cross-border rules require rabies vaccination and vet certificate.

To combat fatigue, take a break every two hours; many truck stops offer coffee and restrooms. Hidden off-route spots include the secret beach at Kep and the caves of Kampong Speu.

Khao Yai National Park offers waterfalls and hiking trails. In Cambodia, the must-see is Angkor Wat, a UNESCO World Heritage Site near Siem Reap, though it's a detour north. Closer to the route, Phnom Chisor is a hilltop temple with Angkorian ruins.

Climate varies: the Thai highlands are cooler, while Cambodia's lowlands are hot and humid year-round. The rainy season (June–October) turns roads muddy but landscapes lush.

Local markets in towns like Battambang and Kampot are perfect for sampling fresh produce and street food. Phnom Penh’s Central Market is a French colonial building with jewelry and electronics stalls.