Transport · Cross-Border · Vietnam
Hekou to Lao Cai — Road Border Crossing
The Hekou (河口) to Lao Cai border crossing connects Yunnan province to northern Vietnam. It is the highest-traffic China-Vietnam land crossing, typically crossed by bus or private vehicle. A high-speed rail link from Kunming to Hekou opened in 2016.
Route & practicalities
The Hekou / Lao Cai border crossing is the principal road crossing between China's Yunnan province and northern Vietnam, and one of the busiest China-Vietnam crossings overall. Hekou is a small border town in Yunnan, accessible from Kunming by the dedicated Kunming-Hekou high-speed railway (opened 2016, journey time approximately 3 hours 30 minutes, compared to the old narrow-gauge metre-gauge railway that took 10+ hours).
From Hekou town, the border crossing itself is a 5–10 minute walk to the bridge over the Red River (Nanxi River / Sông Hồng) that separates China and Vietnam. After completing Chinese exit procedures at the Chinese border checkpoint, cross the bridge on foot (bicycles and motorcycles can cross; private cars require special documentation). Vietnamese entry procedures are conducted on the Vietnamese side at Lao Cai.
From Lao Cai, buses and shared taxis connect to Sapa (30–40 minutes) and a night train connects to Hanoi (approximately 8–9 hours). The Lao Cai–Hanoi railway uses the metre-gauge Vietnam Railways network.
Transport from Kunming: take the high-speed train from Kunming South station to Hekou North station. Trains run several times daily. Ticket price approximately ¥130–180 for second class.
Crosing hours: generally open 8 a.m. to 10 p.m. Vietnamese time (Vietnam is 1 hour behind China during standard time). Check current hours as these change seasonally.
Customs: standard Chinese exit customs. Vietnamese customs allows 1.5 litres of alcohol and 200 cigarettes duty-free.
What to expect at the border
The crossing itself takes 30–90 minutes depending on queue length. Weekends and the days before and after Chinese Golden Weeks see significant queues. The bridge crossing is on foot; tuk-tuks and porters assist with heavy luggage on the Vietnamese side. Currency can be exchanged at booths on both sides.