Cao Bang Loop in 4 Days, With Prices and Ban Gioc Timing

The Cao Bang Loop takes four days from Cao Bang city: 85 km east to Ban Gioc Waterfall, a night in a stone village beside it, Nguom Ngao Cave and Phong Nam Valley, then Angel Eye Mountain and Thang Hen Lake on the way back, and Pac Bo as a fourth-day return trip. Entry tickets for all five sights come to about 140,000 dong (5.40 dollars).

It is not a signed circuit. The name covers two loops meeting in Cao Bang city, and the western one through Bao Lac is a separate, harder trip. This is the eastern loop plus Pac Bo, which is what most people mean.

Where is Cao Bang, and is it a city or a province?

Both. Cao Bang province sits on Vietnam's northeastern border with China's Guangxi region, about 280 km north of Hanoi, and Cao Bang city is its capital. When Vietnam cut its 63 provinces to 34 on 1 July 2025, Cao Bang was one of 11 left untouched, even though at about 6,700 square km it is under the size threshold. The border, the terrain and a population about 95% ethnic minority, mostly Tay and Nung, kept it whole.

The city itself is a river town of concrete shophouses. One night is enough. Withdraw cash there: homestays and ticket kiosks take cash only, and riders report not finding ATMs out on the loop.

Most of what you ride through belongs to the Non Nuoc Cao Bang UNESCO Global Geopark, listed in 2018: limestone towers standing straight out of flat rice valleys, which is the reason to come.

The Cao Bang Loop by day

Add a 6 to 8 hour bus from Hanoi each end. That makes the honest total five or six days, not four.

Day 1: Cao Bang to Ban Gioc, 85 km

The road from Cao Bang to Ban Gioc is paved the whole way. The first stretch out of the city is the worst for traffic: trucks, blind bends on Ma Phuc Pass and no shoulder. Phuc Sen, about 30 km out, is a Nung village of blacksmiths; walk into a forge only when the smith waves you in. Quang Uyen at about 40 km has fuel, and so does Trung Khanh. Past that, carry what you need.

Sleep near the falls, not in Trung Khanh. Khuoi Ky is a village of stone houses about 2 km before the gate, and homestay rooms around there are listed at 200,000 to 400,000 dong a night (8 to 15 dollars), with dinner 50,000 to 100,000 dong extra. Order dinner when you book. There is nowhere to buy one at 8pm.

Day 2: Ban Gioc, Nguom Ngao and Phong Nam

Sleeping 2 km away buys you the falls before the midday tour buses. In September, the busiest month, be there before 09:00 or after 15:00. Adult entry is 45,000 dong (1.70 dollars), 20,000 for children 1 to 1.3 m tall, free under 1 m, and the kiosk takes cash only. A bamboo raft to the foot of the falls is 50,000 to 100,000 dong for 10 to 20 minutes. No swimming in the pool under the main fall. The Ban Gioc Waterfall guide has the rest.

The main fall at Ban Gioc. The far side of the river is China. Photo: Vincent Nguyen; Pexels licence.

The awkward part. Between March and May the river is at its lowest, and the falls can look like a row of thin strands. An upstream dam releases water, usually between about 10:30 and 13:00, and that is when the curtain fills out. In the dry months, plan the visit around that window instead of the early start.

The other awkward part is the view across. The river is the border, the Chinese bank has its own boats and viewing decks for what China calls Detian Falls, and foreigners cannot cross from the Vietnamese side.

The sign by the falls maps the border markers 834 to 837 along the Quay Son River. Photo: Fogylands; CC BY-SA 4.0. Photo: Fogylands, CC BY-SA 4.0.

Nguom Ngao is 3 km back down the road. Same price, 45,000 dong. The lit route runs about 1 km to an end chamber and takes 45 minutes to an hour, on a wet stone path that is slippery in sandals.

Spend the afternoon in Phong Nam Valley: a narrow lane among karst towers and paddies, about 15 km of it, with homestays at 250,000 to 500,000 dong a night. This is the quietest valley on the loop and the one worth riding slowly.

The lit route in Nguom Ngao Cave, about 1 km long. Photo: Adam Jones from Kelowna, BC, Canada; CC BY-SA 2.0. Photo: Adam Jones, CC BY-SA 2.0.

Day 3: Angel Eye Mountain and Thang Hen Lake

Angel Eye, Mat Than in Vietnamese, is a limestone peak with a hole about 50 m wide punched through its top. It is free. The last 500 m to the viewpoint is a steep gravel path, and the access lane is impassable after heavy rain, so ask your host that morning.

Angel Eye Mountain, the hole near the top about 50 m across. Photo: Truong Nguyen; Pexels licence.

Thang Hen is not one lake but 36, joined by underground channels and filled by the rains. Entry is 30,000 dong, collected at the resort gate that is the only way in. Come in the dry season and expect lower water and grass where the summer photos show lake. Then ride the 25 to 30 km back to the city before dark.

If limestone and caves pulled you here, the next place built on the same rock is Phong Nha in central Vietnam, where you go into the caves on foot, with ropes and a guide. Jungle Boss runs its expeditions there, not in Cao Bang.

Day 4: Pac Bo, 50 km northwest

Pac Bo is where Ho Chi Minh came back into Vietnam in early 1941 after about 30 years abroad, and lived in a small cave near the border. It is about 50 km from the city on Highway 3, 90 minutes each way. Entry is 20,000 dong, the site is open 8:00 to 17:00, and electric buggies run from the car park. Lenin Stream runs under Karl Marx Mountain, both named by Ho, and about 200 stone steps climb to Coc Bo Cave. Signs are in Vietnamese. The Pac Bo visitor guide walks the site.

The stream at Pac Bo, in mist. Photo: [Tycho] talk, http://shansov.net; CC BY-SA 3.0. Photo: Tycho, CC BY-SA 3.0.

Allow 2 to 3 hours on site. Back in the city by mid-afternoon, you can still make the night bus to Hanoi.

Motorbike, easy rider or car on the Cao Bang Loop

These are rates listed by Cao Bang rental shops and guides in 2026. They are market ranges, not Jungle Boss prices, and not quotes.

Four people in a car pay 800,000 to 1.2 million dong each for four days. That is about what one easy rider costs a single person, and the bags stay dry.

On a bike, a semi-automatic beats a scooter on the passes. Riders who have done it describe about 3 hours of riding a day, 08:00 starts and arrivals before 18:00. The roads are unlit. Be off them by dark. If you want a guide on the bike in front, a private 10-day Vietnam motorcycle tour rides Ban Gioc, the Ha Giang Loop and Sapa in one route.

Licences are where the guides contradict each other. One ranking page says International Driving Permits are not valid in Vietnam. That is out of date: the UK government's Vietnam advice says British riders need their UK licence plus the 1968 version of the IDP, and third-party insurance is a legal requirement. Other nationalities should check their own. Cao Bang shops have started asking for the permit. Never leave your passport as the deposit.

Test both brakes before you leave the yard. Photograph every scratch.

Border permits and road conditions

No permit is needed for Ban Gioc: the kiosk sells tickets to foreigners without documents, and none of the ranking guides list a permit for the other stops in this route. Carry the passport anyway, because police checks near the border happen. A Ha Giang border permit does not cover Cao Bang.

Off the tourist sights it is different. UK advice says villages, communes and wards near the border can need permission from the provincial police, and the restricted zones are not always signed. Turn round when a lane heads for the frontier and your host has not said it is fine.

June to August brings the highest water and the most landslides. Do not ride through standing floodwater or past a barrier, whatever the map says.

Hanoi to Cao Bang, and the Ha Giang connection

Hanoi to Cao Bang is about 280 km. Sleeper buses leave from My Dinh station, take 6 to 8 hours and cost 200,000 to 400,000 dong (8 to 15 dollars). There is no airport and no railway. A direct night bus to Trung Khanh, for Ban Gioc, is about 7 hours and 300,000 dong, but confirm it at My Dinh; we found only one source for it.

Is Cao Bang on the Ha Giang Loop? No. It is the next province east. From Meo Vac the road runs on through Bao Lac to Cao Bang city, roughly 250 to 300 km, and a direct bus from Ha Giang takes 6 to 7 hours for about 100,000 to 150,000 dong. The Ha Giang to Cao Bang guide covers the routes.

That Bao Lac road is the western loop, with switchback passes such as Me Pia and Khau Coc Cha and few services. It needs its own days.

The Ha Giang Loop has higher passes and far more riders; Cao Bang has the waterfall and the quiet. With under a week, pick one. Doing both means the Hanoi to Ha Giang bus first, then a transfer day east.

Best time to visit and what it costs

September and October are the best balance: clearer water at Ban Gioc, rice turning gold and drier roads. Trung Khanh's chestnuts come in from September to November. November to February is cold and foggy on the passes, with low water and few visitors. March to May has dry roads and the thinnest falls, which is why the dam window matters then.

Budget for one person sharing a car with three others, four days:

That is about 1.9 to 3.3 million dong (73 to 127 dollars) before food. City hotels list at 300,000 to 600,000 dong a night. Pay homestays and ticket kiosks in cash.

Cao Bang works well as the northern half of a longer trip. The southern half, for anyone who wants to go underground properly, is a multi-day caving expedition in Phong Nha. Kong Collapse is our 5 day, 4 night route there, rated extremely strenuous and capped at 10 people.