Trip overview
Most travelers reach Phnom Penh by plane and never see the stretch of river between the two countries at all. This trip goes the slower way. You base two nights in Chau Doc, the last sizeable town on the Vietnamese side of the Mekong, then join a fast boat that runs the river frontier itself, past fish farms and rice paddies, into Cambodia. It suits people who read "cross a border by river" and want to actually do it, not just the fastest way from A to B.
The Chau Doc side gives you the delta at its most devotional: a mountain crowded with pilgrims, a flooded forest under a green canopy, and a Cham Muslim village that most Vietnam itineraries skip entirely. Since the 2025 provincial merger, Chau Doc sits inside an enlarged An Giang province administered from Rach Gia rather than the more commonly assumed Long Xuyen, though nothing about the town itself, or what you see there, has changed. Cambodia’s side opens with Sisowath Quay and the confluence of four rivers at Phnom Penh, then a day given over to the capital’s palaces and its harder, more recent history.
Trip highlights
- A fast boat crossing the river frontier from Chau Doc to Phnom Penh, roughly five to six and a half hours door to door
- Sam Mountain and the Ba Chua Xu Temple, the delta’s busiest pilgrimage site
- The flooded forest at Tra Su, by motorised boat and hand-rowed sampan
- Chau Giang, a Cham Muslim river village with its own mosque and weaving tradition
- Sisowath Quay and the Chaktomuk confluence, where the Mekong, the Tonle Sap and the Bassac meet at Phnom Penh
- The Royal Palace, the National Museum, and the sober counterpoint of Tuol Sleng and Choeung Ek
Your day-by-day itinerary
Day 1: Ho Chi Minh City to Chau Doc (about 5–6 hours by road, via Long Xuyen)
The road west runs flat through rice country most of the way, reaching Chau Doc by mid-afternoon. There’s time to check in, walk the riverfront before dinner, and get an early night, since tomorrow is a full day on your feet.
Day 2: Tra Su flooded forest, Sam Mountain and the Cham village of Chau Giang
The morning heads about 30 km out to the flooded melaleuca forest at Tra Su: a motorised boat covers the open water before a hand-rowed sampan takes you under the canopy, best from September to November when duckweed spreads bright green across the surface and bird numbers are highest. After lunch, a short crossing reaches Chau Giang, home to a Cham Muslim community centred on the Mubarak Mosque, where a handful of households still weave by hand. Late afternoon climbs Sam Mountain to the Ba Chua Xu Temple, the delta’s largest pilgrimage site, listed by UNESCO as an Intangible Cultural Heritage of Humanity in December 2024 for the annual festival held around the 23rd to 27th day of the fourth lunar month.
Day 3: Chau Doc to Phnom Penh by river (about 5–6.5 hours including border formalities)
An early start: the fast boat leaves Chau Doc at around 7:00 to 7:30 am, one departure a day, and covers the river route north to Phnom Penh, arriving around 1:00 to 1:30 pm. Somewhere in the middle of that run you’ll clear both border posts, on the Vietnamese side at Vinh Xuong and on the Cambodian side at Kaam Samnor. After checking in to your hotel, the afternoon is free to walk Sisowath Quay, the riverfront promenade that looks out over the Chaktomuk confluence, where the Mekong, the Tonle Sap and the Bassac all meet in front of the city.
Day 4: Phnom Penh: the Royal Palace, the National Museum, Tuol Sleng and Choeung Ek
A full day in the capital, and a deliberately mixed one. The morning covers the Royal Palace grounds and the National Museum’s collection of Khmer sculpture, both a short walk from the river. The afternoon turns to Tuol Sleng, the former high school used as the Khmer Rouge’s S-21 interrogation centre, and Choeung Ek, one of the killing fields on the city’s outskirts. Neither stop is easy, and neither is optional if you want to understand modern Cambodia rather than just its temples; your guide will pace the day and answer questions honestly.
Day 5: Phnom Penh, departure
The morning is free, whether that means the Central Market, a last coffee on Sisowath Quay, or simply packing at a slow pace before your transfer to Phnom Penh International Airport for your onward flight.
What’s included
- Hotels in the class you choose, twin or double occupancy, with breakfast each morning, or an equivalent property if the one named is full.
- All meals written into the day-by-day programme below.
- A private air-conditioned vehicle for every transfer and excursion in the programme.
- An English-speaking local guide at each stop on the route.
- Every boat trip, river crossing and cruise named in the itinerary.
- Entrance fees for the sites listed in the programme.
- Drinking water in the vehicle and on boat days.
- Government tax and service charge.
Not included
- International and domestic flights, and rail tickets.
- Visas, and any fee collected at a border post.
- Travel insurance.
- Meals and drinks that are not written into the programme.
- Personal spending such as laundry, phone calls, minibar, souvenirs and watersports.
- Early check-in, late check-out and room upgrades.
- Anything added on the day at your request outside the printed programme.
- Gratuities for your guide and driver.
- Costs arising from weather, flooding, road closures or other events beyond our control.
- Bank transfer charges.
Booking this trip
- Days
- 5 days / 4 nights
Sending this does not charge you. We hold the space and confirm within 24 hours.
Border rules, currency and what to expect on both sides of the river are covered on our [travel information for the Mekong countries](mekong/travel-information) page.
Send us your travel dates and how many people are traveling, and we’ll check boat availability and reply with a plan and a quote by email.