The full picture for anyone planning a Cambodia border run from the south of Vietnam.
If you live in Ho Chi Minh City, Nha Trang, or Da Lat, a visa run to Cambodia is the shortest way to reset a tourist visa. The border is a couple of hours from HCMC, the Cambodia visa on arrival is cheap, and most trips are done in a single day.
The idea is the same as any visa run. You leave Vietnam by land, get an exit stamp, step into Cambodia, and come back with a fresh entry stamp. The new stamp starts your next stay. For people on the 90 day e-visa or a standard tourist visa, this is how you buy another few months without flying anywhere.
Cambodia handles the southern routes of the network. Laos covers the north and the central coast. If your city sits south of Da Nang, Cambodia is almost always the shorter drive. Da Nang itself sits in the middle: its runs go to Laos, but the city is close enough to both borders that the choice comes down to schedule and price.
Most people book through a visa run service because the timing is the hard part. The exit stamp has to be photographed and sent for the new Vietnam visa to be processed, and the sequence matters. Services know the border staff, they know the forms, and they keep the day moving. You can do it alone, but the risk is losing hours to small mistakes.
Vietnam and Cambodia share a long border with several official crossings. For visa runs from the south, two gates matter: Moc Bai and Xa Mat.
Moc Bai (Tay Ninh province) is the main one. It sits on the Vietnam-Cambodia border about 80 km from Ho Chi Minh City, roughly a two hour drive. HCMC, Saigon, Nha Trang, and Da Lat runs all use it. The crossing is called Moc Bai on the Vietnam side and Bavet on the Cambodia side. It is the busiest land gate for visa runs in southern Vietnam, with immigration counters, exchange shops, and waiting areas on both sides. Bavet is a small border town, best known for its casino zone, and it is where the new Vietnam visa gets processed while you wait.
Xa Mat (Tay Ninh province) is the quieter alternative. Same process, same stamps, fewer people. The drive from HCMC is a bit longer than Moc Bai, which is why most services stick with the main gate. When it gets used, it is usually for private car runs where the driver wants to skip the Moc Bai queues on a busy day.
There is no turn-around exemption at either gate. You cross into Cambodia, get the entry stamp, and cross back. The Cambodia side is the point of the exercise, and both gates handle it the same way.
The practical rule: everything south of Da Nang uses Moc Bai. Confirm with your service which gate your run uses before you book. The drive time changes by an hour or two, and so does the pickup time.
Most nationalities get a Cambodia tourist visa on arrival at the border. You do not apply online before the trip unless you want to. You fill out the form, hand over a passport photo, pay the fee, and wait for the stamp. The counter takes about 15 to 30 minutes depending on the queue.
The standard tourist visa costs USD 30 for a single entry and is valid for 30 days. Cambodia runs on US dollars anyway, so bring USD in cash. The border counters do not reliably take cards, and the exchange rate at the gate works against you if you try to pay in dong.
If you would rather skip the counter queue, you can apply online at the official Cambodian e-visa site before you go. It costs about USD 36, takes up to three business days to approve, and you show the approval at the border. For a visa run planned a few days out, that works fine. For a same-day decision, visa on arrival is the faster route.
You need two passport photos with you, standard visa size. One goes on the Cambodia application form, the other is spare in case the first one gets rejected for being too dark or too small. It happens more often than you would expect.
Some nationalities are exempt from the Cambodia visa fee entirely and get the entry stamp free. If you are unsure where your passport stands, check before the trip rather than at the counter. The visa run service will tell you in advance, and they usually know the fee for your exact passport.
The Cambodia side is not the stressful part of the day. It is a form, a photo, cash, and a stamp. The part that actually decides whether you get home the same day is the Vietnam exit stamp and the new visa processing on the Vietnam side.
The sequence at Moc Bai is the same every time, and the order matters. Here is what a typical run looks like.
The whole border sequence usually runs 45 minutes to an hour and a half. The long part of the day is the driving. The border is calmest before 10 am, so morning departures make the same-day return work.
A Cambodia visa run has two real costs: the transport and the border fees. The transport is the big one. Border fees are small, fixed, and the same no matter which city you start from.
Ho Chi Minh City is the closest city to Moc Bai at about 80 km, roughly two hours each way. This is the cheapest city for a Cambodia run because the drive is shortest. Add it up for a solo traveler with a 90 day e-visa: roughly 4 million VND all in, or about USD 160, for three more months in Vietnam. Shared vans are the standard option. See the HCMC Moc Bai page.
Saigon runs use the same gate, and the same-day math is identical. Saigon services are the busiest in the network, with the most departure slots and the widest range of van sizes. Saigon visa run Cambodia page.
Nha Trang is the long one on the Cambodia side: about 400 km, six to seven hours each way. Most Nha Trang runs leave very early and come back late the same night. Private car is the common choice because the drive is too long for a shared van schedule. Nha Trang to Moc Bai guide.
Da Lat sits about 250 km from Moc Bai, four to five hours through the mountains. Same-day runs work but the road is winding and the return is late. Private car is standard. Da Lat visa run site.
Border fees on top: Cambodia visa on arrival USD 30, and the Vietnam e-visa around 2.4 million VND (about USD 95) when your service files it at the border. The e-visa is usually the reason people do the run at all, so most packages bundle it in.
Book the day before. Same-day bookings exist but the pickup windows get squeezed, and the border slows down in the afternoon. A morning arrival at the gate is what makes the same-day return work.
The list is short, and every item on it exists for a reason.
Leave the laptop, jewelry, and anything you would hate to lose at home. You carry everything across two borders by hand.
Most nationalities get a Cambodia tourist visa on arrival at Moc Bai or Xa Mat. It costs USD 30, is valid for 30 days, and takes about 15 to 30 minutes at the counter. Some passports qualify for visa-free entry; check yours before the trip.
Transport plus border fees. From HCMC a solo run with a new 90 day Vietnam e-visa lands around 4 million VND all in, or about USD 160. The Cambodia visa is USD 30, the Vietnam e-visa about 2.4 million VND, and the transport is the rest.
From HCMC, about 8 hours door to door: two hours out, under two hours at the border, two hours back, plus lunch. Nha Trang and Da Lat runs are longer days because the drive is longer. The border is calmest before 10 am.
Yes, the border is open to everyone. The risk is timing: the exit stamp photo has to reach the right place, the Cambodia form has to be right, and the new Vietnam visa has to come back before the gate closes. Services exist because a small mistake turns a day trip into an overnight stay.
Ho Chi Minh City, Saigon, Nha Trang, and Da Lat runs use Moc Bai, the main Vietnam-Cambodia gate. Xa Mat in Tay Ninh province is the quieter alternative used by some private drivers. Ask your service which gate your run uses before you book.
Bavet is the Cambodian town on the other side of Moc Bai. It is where you get your Cambodia entry stamp and, if you want, spend an hour in the casino zone while the new Vietnam visa processes. You do not need to go further into Cambodia.