A practical Reunification Express itinerary down Vietnam by train, from Hanoi to Saigon, with stops in Ninh Binh, Dong Hoi, Hue, Hoi An and Nha Trang plus booking tips.
Vietnam is long, thin and built for the train. A single railway runs almost the entire length of the country, and following it from north to south is one of the best ways to see the place without renting a car or chaining together flights. This Reunification Express itinerary covers 19 days from Hanoi to Saigon, with stops in Ninh Binh, Dong Hoi, Hue, Hoi An, Quy Nhon and Nha Trang, and it leans on comfortable overnight sleepers so the long legs double as accommodation.
The trains between Hanoi and Ho Chi Minh City are widely known as the Reunification Express, even though no single service officially carries the name. The line is 1,726 km long, and end to end it takes around 30 to 36 hours. You would not do it in one sitting. Splitting it into a series of comfortable hops is what turns it into a proper trip.
The appeal is simple. You swap traffic and airport queues for a window seat, the scenery changes constantly, and every stop is a city or town worth a night or more. The single most famous stretch, the Hue to Da Nang leg over the Hai Van Pass, runs along the South China Sea past beaches and headlands and is often called the most beautiful train ride in Southeast Asia. Sit on the left side heading south for the best of it.
This is a one-way route. You finish in Saigon and fly home from there, which avoids losing days backtracking north.
Start slowly in the capital. The Old Quarter is the obvious base, a knot of narrow streets full of food stalls, coffee shops and small hotels, with Hoan Kiem Lake a short walk away. Give yourself a full day to adjust, eat well and find your feet before the first train south. Hanoi is also where you should lock in your sleeper tickets if you have not booked them already.
A short daytime train brings you to Ninh Binh, where limestone towers rise straight out of the rice fields. The signature experience is a sampan boat trip through Trang An or Tam Coc, rowed slowly between the karst and through low river caves. Climb the steps at Mua Cave for the classic viewpoint, then rent a bicycle and roll out between the paddies. Two nights is the right amount of time here.
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Dong Hoi breaks the long run down to central Vietnam and puts you within reach of Phong Nha-Ke Bang National Park. This is cave country on an almost unbelievable scale. Take a boat into the river-filled Phong Nha Cave, walk the vast dry chambers of Paradise Cave, and remember that the same park hides Son Doong, the largest cave on Earth. Base yourself in Phong Nha village rather than Dong Hoi town if the caves are your priority.
A short train south reaches Hue, the seat of the Nguyen emperors. The walled Citadel and Imperial City take up a good half-day, and the royal tombs scattered along the Perfume River fill another. Hue also has its own proud food culture, from refined royal dishes to the fiery bun bo Hue. It is a quieter, more reflective stop, which sets up the coast nicely.
The best train ride of the trip is the short hop from Hue to Da Nang. The line climbs the Hai Van Pass with the sea on one side and green mountains on the other, so keep your camera ready. Da Nang has no convenient old town of its own for most visitors, so continue by taxi or shuttle to Hoi An, about 45 minutes away. Three nights here is easy to fill: the lantern-lit ancient town, a riverside dinner, a tailor fitting, a morning at An Bang beach, and a day trip to the My Son ruins or back to Da Nang.
Most itineraries skip the long central coast between Hoi An and Nha Trang, but a single night in Quy Nhon breaks the journey and rewards you with a city that sees few foreign visitors. Slow down on the town beach, eat seafood by the harbour, and take in the Cham towers on the edge of town. It is a low-key pause rather than a headline stop, and that is exactly the point.
A short coastal train continues to Nha Trang, Vietnam's headline beach resort. This is the place to ease off the sightseeing: swim, take an island-hopping boat trip, snorkel, and visit the hillside Po Nagar Cham towers for a little history. Two nights keeps the pace right without turning the trip into a beach holiday.
The final leg runs into Ho Chi Minh City, still widely called Saigon. It is loud, fast and full of energy, a fitting contrast to where you started. Spend time at the War Remnants Museum, wander the French-colonial centre, eat your way through the street-food scene, and take a day trip out to the Cu Chi tunnels or the Mekong Delta. With an international airport, it is a natural place to end the journey.
Vietnam is long enough that the weather is rarely perfect everywhere at once. For the whole line in one trip, February to April is the best compromise: the south is dry, the centre is mostly settled, and the north is warming up after winter. The central coast around Hue and Hoi An is wettest from roughly September to December, so spring is the safer window.
Book your sleeper berths a few weeks ahead in high season, either through Vietnam Railways or a trusted agent. The air-conditioned 4-berth soft sleeper is the comfortable standard, with bedding and a lockable cabin door. For one or two legs you can upgrade to a private tourist carriage with hotel-grade bedding if you prefer. Inside each stop, ride-hailing apps and short taxi rides cover everything, so you never need to drive.
If you want a single trip that shows the length and variety of Vietnam without the stress of driving, this Reunification Express itinerary is hard to beat. The trains do the heavy lifting, the scenery between stops is part of the reward, and each base, from karst country to cave park to imperial city to beach resort, has its own clear character.
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A 19-day, car-free trip down Vietnam on the North-South railway, from Hanoi to Saigon, with stops in Ninh Binh, Dong Hoi, Hue, Hoi An, Quy Nhon and Nha Trang and the scenic Hai Van Pass in between.
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