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NORTH VIETNAM · 4D3N
Ky Quan San 4D3N
$199 / 5.200.000 VND /person
Hanoi → Sa Pa · valley walk Day 1 → Núi Muối hut Day 2 → Ky Quan San summit 3,046m Day 3 → descent + Dao herbal bath → night bus Day 4.
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No payment now · Pay 14 days before · Free cancellation until then
Trip info
Pickup
Old Quarter, Hanoi · 06:30 premium sleeper bus · Day 1
Group size
Small group · departs from 4 guests
Transport
Premium sleeper bus (HN ↔ Sa Pa) · private car (4–16 seats) · motorbike taxi to trailhead
Meals
Day 1: lunch + dinner Day 2–4: full board
Accommodation
Day 1: Sa Pa hotel · Day 2–3: Núi Muối mountain hut (~2,100m)
Summit
Ky Quan San 3,046m · 4th highest in Vietnam
Trek
~28km over 3 trekking days 1,136m → 3,046m
Duration
4 days 3 nights · departs Hanoi Day 1
Required
Original passport or national ID
The pitch
3,046m, and the night at Núi Muối is half the story.
The summit is the goal. The night at Núi Muối is the memory.
- Ky Quan San — known to trekkers as Bạch Mộc Lương Tử — is Vietnam's fourth-highest peak, and the route gives you two nights high on the mountain at the Núi Muối hut (~2,100m), with sunset and sunrise from the ridge outside
- The trail changes character almost every hour: terraced fields, bamboo and cardamom forest, dwarf bamboo, streams, moss-draped ancient forest, then the exposed "dinosaur-spine" ridges to the summit
- Hot meals on the mountain — hotpot and Western-style dishes at the hut — with a guide and porter beside you throughout
How tough is it?
4 /5
Hard
Three real trekking days from 1,136m to 3,046m: a long climb to the hut, a summit day on steep, exposed ridgelines, and the same trail back down. Right for fit, experienced walkers — not a first mountain.
Physical demand
About 9km and 1,100m of climbing to the hut, a ~10km summit day with around 1,250m of ascent, then ~9km down. Roughly 28km in total, over steep, rocky and sometimes slippery trail.
Altitude & terrain
Summit at 3,046m, nights at ~2,100m — cold and high, but below the range where altitude sickness is a major risk. The ridgelines are exposed and need steady footing; no technical climbing.
Remoteness
No road beyond the trailhead village and hours from hospital-level care. The Núi Muối hut gives you a base, and your guide and porter stay with you the whole way.
Route map
Where the trail actually goes.
↻ Drag compass to rotate
- Day 1 — trailhead to Núi Muối hut
- Day 2 — hut to summit (same trail back down)
Satellite imagery via Esri · actual GPS track recorded on this route
The journey
The journey, mapped.
Time across, elevation up. Every spike is a moment worth remembering.
⏱ Time markers are estimates — actual pace depends on each group's fitness level.
Day 1 Sa Pa hotel Lunch + Dinner
Day 1 — Hanoi → Sa Pa → Y Linh Hồ · Lao Chải · Tả Van
An easy first day to get your legs under you. The premium sleeper bus brings you to Sa Pa by early afternoon, with time to check in and eat lunch. In the afternoon, a gentle hike links the villages of Y Linh Hồ, Lao Chải and Tả Van — with a language guide and a taste of Giáy culture along the way. Back in Sa Pa for dinner, then the evening is yours: Sa Pa's old stone church and the central square are a short walk away.
Day 2 Núi Muối mountain hut, ~2,100m Full board (B/L/D)
Day 2 — Sa Pa → Ky Quan San village → Núi Muối hut (~2,100m)
6–7 hrs trekking 9km 1100m up
After breakfast in Sa Pa, a car (and a motorbike taxi for the last rough stretch) takes you to the Ky Quan San trailhead at about 1,136m. From there it is a steady climb: forest of cardamom and bamboo, streams, and a lunch stop beside the water. You reach the Núi Muối hut around 16:00 — in time for sunset around the Núi Muối ridge, then a hot dinner of hotpot and Western-style dishes and the first night on the mountain.
Day 3 Núi Muối mountain hut, ~2,100m Full board (B/L/D)
Day 3 — Núi Muối → Ky Quan San summit 3,046m → Núi Muối
8–9 hrs trekking 10km 1250m up 1250m down
An early start: sunrise check-in at Núi Muối at 05:30, then a quick breakfast of instant noodles and bread before setting off at 07:00. The trail runs through moss forest, bamboo forest and the exposed "dinosaur-spine" ridges before reaching the 3,046m summit marker at around 12:30. The way back to the hut is the same trail; you reach Núi Muối for dinner and a second night on the mountain.
Day 4 Night bus Full board (B/L/D)
Day 4 — Núi Muối → Sa Pa → Hanoi
6–7 hrs trekking 9km 60m up 1100m down
Breakfast at the hut, then the long walk down the same trail, with lunch on the way. By 14:00 you reach the foot of the mountain and drive back to Sa Pa, where a traditional Dao herbal bath is waiting around 16:30 — a soak the Dao use to ease tired muscles and speed up recovery. Dinner is a farewell meal at a local restaurant in the centre, a stroll through the night market, and the premium sleeper bus back to Hanoi at 23:00.
More about the destination
Two names, one mountain.
Locals call it Ky Quan San — the name French mapmakers wrote down as Ky Kouân Chan. "Bạch Mộc Lương Tử" arrived later, coined by the trekking community that began climbing the peak around 2013. Either way, the summit is the same 3,046m ridge on the border of Lào Cai and Lai Châu, fourth-highest in the country.
The route is a long, steady education in Vietnamese mountain forest. It starts among terraced fields, then climbs through bamboo and cardamom forest, past streams and small waterfalls, into old forest where every trunk is wrapped in moss. Higher up the trees shrink to dwarf bamboo and the path narrows onto ridgelines that trekkers nicknamed the dinosaur's backbone.
Núi Muối is where the mountain slows you down. The hut sits high enough to look down on the cloud layer, and the porters who built the first huts here, around 2015, turned a hard climb into something a group of travellers can do together — with hot food, shelter and a place to watch the light change.
Above 3,000m, cloud and mist cover the peak for much of the year. Some mornings the whole valley fills with cloud below you; some mornings you stand in it. We can't promise the view — only that the walk is worth it either way.
Safety & remote access
Know before you go.
Medical access time
~6 hours from the furthest point on the route to hospital-level care.
Phone signal on the mountain can be limited. Your guide carries the group's primary means of communication — let family know contact may be patchy for most of the trek.
If something goes wrong
1
On-site response
Your guide carries a first-aid kit and is trained in wilderness first response. Minor injuries, blisters and early altitude symptoms are treated on the trail and the group's pace is adjusted immediately.
2
Assisted evacuation
If a guest can't continue but isn't in danger, the guide and porters organise a supported descent to the Núi Muối hut or down to the closest point a vehicle can reach.
3
Medical evacuation
For serious cases, the guide contacts local emergency support and coordinates transport to the nearest hospital-level facility. Travel insurance covering emergency evacuation is included for every booking.
Travel insurance is included for every guest, with coverage up to 100,000,000₫ per person per incident — including emergency evacuation costs.
Before you go
What to pack.
Clothing
- Quick-dry hiking clothes (avoid cotton)
- Warm mid-layer and a windproof jacket for the ridge and the hut
- Waterproof rain jacket (a rain poncho is provided)
- Warm hat and gloves
Footwear
- Broken-in waterproof hiking boots with ankle support
- Spare socks
- Trekking poles — strongly recommended for the descent
Health & comfort
- Personal medication
- Blister plasters
- Sunscreen and a hat
- Insect repellent
Hut nights
- Headlamp with spare batteries — needed for the 05:30 sunrise start
- Power bank
- Cash for hot water at the hut and for tips (not included)
Documents & extras
- Original passport or national ID
Your welcome pack
Everything in your bag has a reason.
Your host meets you with a Morning Vietnam pack before the drive to the mountain. One item was chosen for cold nights at altitude.
When to go
By season.
Ky Quan San is best from September to April, when the rains ease and the trail is firmer. Early spring adds rhododendron, and winter brings cold mornings and the chance of frost on the summit.
Best conditions Good, some haze Wet season — still doable
Autumn (Sep – Nov)
The dry season starts around September: firmer trail, clearer air, and the best odds for cloud-sea mornings at Núi Muối. October and November are the sweet spot.
Early spring (Feb – Mar)
Rhododendron blooms in the forest — early spring is widely described as the most beautiful time on this route. Mornings are cold.
Winter (Dec – Jan)
Cold and often misty. Trekkers have reported frost and ice on the summit in the coldest weeks — pack real warm layers.
Wet season (May – Aug)
Rain and storms make the steep sections muddy and slippery, and cloud-sea views are less reliable. Not our recommended window.
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Based on 32 reviews
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Ky Quan San 4D3N
from $199 / 5.200.000 VND /person
No payment now — reserve your spot, pay 14 days before. Free cancellation.
Is Ky Quan San the same as Bạch Mộc Lương Tử?
Yes. Ky Quan San is the local name of the mountain (French maps wrote it Ky Kouân Chan). Bạch Mộc Lương Tử is the name the trekking community gave it from around 2013, and it stuck. Same 3,046m peak, fourth-highest in Vietnam.
How fit do I need to be?
High fitness required. The trek is about 28km over three days, climbing from 1,136m to 3,046m, with a 6–7 hour walking day to the hut and a long summit day on steep, rocky and exposed ridgelines. No technical climbing, but this is serious mountain trekking. Gym-only fitness is not enough — regular hikers and runners will manage.
What is the hut at Núi Muối like?
A basic mountain hut at around 2,100m, where you sleep two nights. The hut stay is included in the price. Hot water is available to buy for yourself. It is cold at night, so bring warm layers.
What do we eat on the mountain?
All meals in the itinerary are included. Lunch is served in the forest by a stream on the way up. Dinner at the hut is hotpot and Western-style dishes, and breakfast on summit day is instant noodles and bread. Hot water for tea or coffee you buy yourself.
Will I see the sea of clouds?
Not guaranteed — cloud and mist cover the peak for much of the year, and some mornings you stand inside the cloud rather than above it. Autumn (Oct–Nov) and early spring give the best chances. The walk, forest and hut are worth it either way.
Is it harder than Fansipan or Putaleng?
On our difficulty scale, Fansipan is 'Advanced' (tier 2) while Ky Quan San is 'Hard' (tier 4) — the same tier as Putaleng. The route is longer and more rugged than Fansipan, with steep, exposed ridgelines near the top.
Do I carry my own bag?
You carry a light daypack with water, a rain jacket and your personal items. A porter carries the group's food and heavier gear.
Is the sleeper bus included?
Yes — on the 4D3N, the premium sleeper bus between Hanoi and Sa Pa (outbound on Day 1, return on Day 4) is included. If you are already in Sa Pa, take the Only Trekking version instead.
How many people are needed for the tour to run?
The tour departs with a minimum of 4 guests. If you book alone or in a smaller group, we'll confirm your date once the group reaches 4 — and you pay nothing until then.
When do I pay?
Reserve your spot first — no payment upfront. Pay 14 days before departure. Free cancellation until then.
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