A spectacular mountain road of around 50 km linking Lao Cai and Lai Chau, famous for its hairpin bends, seas of clouds and the “Lonely Tree”.
O Quy Ho Pass crosses the Hoang Lien Son range west of Sapa and is counted among the “four great passes” of northern Vietnam, alongside Ma Pi Leng, Pha Din and Khau Pha. Its highest section, around Tram Ton, climbs close to 2,000 metres.
On many cool mornings the valleys below are filled with a sea of clouds, while late afternoons bring long views and sunsets over layers of mountains towards Lai Chau.
Along the way you will find the much-photographed Lonely Tree viewpoint, Silver Waterfall and Rong May Glass Bridge — which is why O Quy Ho is the heart of our adventure routes.
Quick answer
O Quy Ho Pass (Đèo Ô Quy Hồ) One of Vietnam’s four great mountain passes. A spectacular mountain road of around 50 km linking Lao Cai and Lai Chau, famous for its hairpin bends, seas of clouds and the “Lonely Tree”. It is visited on 6 of our Sapa day tours by open-air Jeep or local female-rider motorbike.
Highlights of O Quy Ho Pass
- Hairpin bends and big mountain panoramas
- The Lonely Tree viewpoint
- Sea-of-clouds views on cool, clear mornings
- Access to Rong May Glass Bridge and Silver Waterfall
Things to do
Stop at the Lonely Tree
A solitary tree on a ridge above the valley — the pass’s most famous photo spot.
Hunt for the sea of clouds
Cool, humid mornings often bring clouds drifting through the valleys below.
Walk the Glass Bridge
Rong May Glass Bridge sits on the pass with a glass elevator and skywalk.
Watch the sunset
Afternoon departures can catch warm light over the mountains towards Lai Chau.
Plan your visit
How to get there
The pass starts a short drive west of Sapa Town on the main road towards Lai Chau. Go with an experienced local driver or rider — the road is steep with many hairpin bends.
Best time to visit
September–April for clouds and clear views; late afternoon for sunset. Winter can bring frost and, occasionally, snow on the highest sections.
Local tips
It is noticeably colder on the pass than in town — bring a warm layer.
Roads can close briefly in severe weather; we will adjust the route if needed.
Map
Questions about O Quy Ho Pass
Is it safe to ride O Quy Ho Pass by motorbike?
With an experienced local rider, yes. On our tours you ride as a passenger behind a professional female rider, with helmets provided.
Can I see the sea of clouds on O Quy Ho?
Often, but it depends on the weather and is never guaranteed. Cool mornings from autumn to spring give the best chance.
