An 18-day overland 4WD vehicle tour from Siem Reap, Cambodia to Hanoi, Vietnam spans roughly 2,200 to 2,500 kilometers. It traces the rugged Mekong corridors, crosses through Southern Laos, cuts through Vietnam’s Central Highlands, and ventures north along the Ho Chi Minh Highway.This 18-day trans-Indochina 4WD adventure from Siem Reap to Hanoi blends ancient temples, remote border crossings, and scenic drives. Designed for off-the-beaten-path enthusiasts, it trades standard flights for overland exploration. The detailed, day-by-day expedition itinerary below maximizes off-the-beaten-path dirt trails, high mountain passes, and stunning cultural milestone ...

• Total Distance: ~2,450 km (including scenic unpaved detours)
• Terrain: Jungle dirt tracks, broken asphalt, mountain switchbacks, and national highways.
• Vehicles: High-clearance 4x4 or 4WD vehicle is required for remote segments in Northern Cambodia, Southern Laos, and the Central Highlands

Day 1: Siem Reap – Angkor Complex Trail ( L, D ) 

• The morning pick you up from airport or your hotel
• Route: 40 km loop around the historical complex.
• Highlights: Drive your 4WD through less-visited forest gates of Angkor Thom; explore Angkor Wat Temple.
• Stay: Siem Reap hotel .

Day 2: Siem Reap to Preah Vihear via Koh Ker ( B, L, D )

• Route: 210 km via National Road 64 and rural dirt trails.
• Highlights: 4WD track through the isolated jungle ruins of Koh Ker pyramid; steep 4x4 climb up the Dângrêk Mountains.
• Stay: Preah Vihear. 

Day 3: Preah Vihear to Stung Treng (Mekong River)( B, L, D )

• Route: 150 km via National Road 9.
• Highlights: Remote savanna driving; cross the Mekong River; optional afternoon dirt track to seek out Irrawaddy dolphins near Kratie.
• Stay: Stung Treng.

Day 4: Stung Treng to Champasak / 4,000 Islands (Border Crossing) ( B, L, D )

• Route: 160 km via Tropaeng Kriel / Nong Nokkhian Border.
• Highlights: Clear international border immigration; dynamic off-road driving along the wetlands of the Mekong's Si Phan Don (4,000 Islands).
• Stay: Khong Island / Don Det.

Day 5: 4,000 Islands to Pakse via Bolaven Plateau( B, L, D )

• Route: 180 km loop.
• Highlights: Mud and red-clay tracks winding through Laotian coffee plantations; scenic stops at Tad Fane and Tad Yuang waterfalls.
• Stay: Pakse. 

Day 6: Pakse to Attapeu ( B, L, D )

• Route: 200 km via Route 16.
• Highlights: Challenging high-altitude tracks into the remote, southeastern volcanic plateau landscape of Laos.
• Stay: Attapeu.

Day 7: Attapeu to Kon Tum, Vietnam (The Annamite Range Crossing) ( B, L, D )

• Route: 110 km via Phoukeua / Bo Y International Border Gate.
• Highlights: Steep mountain pass climbs; clear customs at the unique tri-border area (Laos-Cambodia-Vietnam).
• Stay: Kon Tum

Day 8: Kon Tum to Mang Den ( B, L, D )

• Route: 80 km down National Highway 24.
• Highlights: Cruising the iconic, sweeping tarmac corridors of the Central Highlands; visit minority village communal houses (Rong houses).
• Stay: Mang Den mountain 

Day 9: Mang Den - Hoi An ( B, L, D )

• Route: 240 km pushing north.
• Highlights: Navigate deep curves along the historical Truong Son mountain chain; raw jungle backdrop scenery.Winding, steep descent from the high misty hills down toward rural coastal villages.
• Stay: Hoi An 

Day 10: Hoi An Rest & Culture Day ( B )

• Route: 0 km (Foot exploration).
• Highlights: Rest your vehicle;Free day for swmimming ,shopping or wander the old pedestrian alleys of the UNESCO-listed Hoi An Ancient Town.
• Stay: Hoi An. 

Day 11: Hoi An to Hue via the Hai Van Pass ( B, L, D )

• Route: 130 km coastal mountain run.
• Highlights: Drive the famous, hairpin curves of the Hai Van Pass; sunset views along the Lap An Lagoon.
• Stay: Hue

Day 12: Hue to Phong Nha-Ke Bang National Park ( B, L, D )

• Route: 220 km via the historic DMZ route.
• Highlights: Visit Hue Royal palace before crossing the Ben Hai River (former inner-border); driving along the base of towering limestone monoliths.
• Stay: Phong Nha.

Day 13: Phong Nha Off-Road Discovery ( B, L, D )

• Route: 80 km national park loop.
• Highlights: Engage 4WD along the unpaved West Branch of the Ho Chi Minh Highway; step out to visit Paradise Cave.
• Stay: Phong Nha.

Day 14: Phong Nha to Tan Ky ( B, L, D )

• Route: 270 km along the historic Ho Chi Minh Highway.
• Highlights: Sweeping valley drives, agricultural tea hills, and isolated ethnic community farms.
• Stay: Tan Ky (Nghe An). 

Day 15: Tan Ky to Cuc Phuong National Park ( B, L, D )

• Route: 230 km heading northeast, along Ho Chi Minh trails
• Highlights:Cuc Phuong National Park is Vietnam's first and oldest national park, a haven for nature lovers, ecotourists and wildlife enthusiasts
• Stay: Cuc Phuong National Park Guest House

Day 16: Cuc Phuong National Park - Ninh Binh - Tam Coc ( B, L, D )

• Route: 70 km heading northeast.
• Highlights: Visit the park and Rural dirt roads cutting past local rice fields; enter the "Ha Long Bay on Land" limestone karst landscape. Boat to visit Tam Coc caves
• Stay: Tam Coc

Day 17: Ninh Binh to Ha Long Bay ( B, L, D )

• Route: 180 km across the Red River Delta plain.
• Highlights: Driving through busy coastal delta corridors; transition from your 4WD vehicle to an evening boutique boat cruise.
• Stay: Ha Long Bay Cruise Boat. 

Day 18: Ha Long Bay to Hanoi Arrival ( B , L , D )

• Route: 160 km highway transit.
• Highlights: Disembark your cruise; complete your cross-border expedition arriving in the historic center of Hanoi.
• Stay: Hanoi hotel - with farewell dinner in Ha Noi local beer HOI . End The Tour .

Tour price : Contact us