Coordinates: 21°50′52″N 106°45′28″E / 21.84778°N 106.75778°E / 21.84778; 106.75778
If you’re planning this same drive and want to know all about it – how long it is, how long it takes, and where to stop along the way – read on. By the end of this post, you’ll know everything about the drive between Da Lat and Lang Son.
As the crow flies, it’s roughly 693 miles between Da Lat and Lang Son. Luckily, we can’t skip over all the good stuff and have to drive – that means seeing some of the sights and countryside between these two points.
For driving, it is roughly 945 miles or 1522 km between Da Lat and Lang Son. This may vary slightly depending on your start and end points.
In terms of travel time by car, the 945 miles drive from Da Lat to Lang Son takes 21 hours 5 minutes. Again, your final drive time depends on where you start in Da Lat and end in Lang Son.
This is a really long drive, so it's not very realistic to drive nonstop. To get a better idea of how long this road trip would actually take, scroll down to calculate how many hours it would be if you drive with stops.
Realistically, you're not going to want to drive without stopping all the way from Da Lat to Lang Son, especially if you're the main driver. So let's say you're actually planning a road trip to Lang Son, and you need to stop along the way to rest. Plus if it's a real road trip, you might want to check out interesting stops along the way, eat at great restaurants, and find a hotel to stay overnight. That's what we are perfect for, helping you figure out travel plans in detail.
Based on the length of this trip, we think you could spread out this fun road trip over a number of days.
Road trip: 4 days of driving
With the full itinerary planned out, we can estimate your total travel time for this trip.
Travel time: 21 hours 5 minutes hours on the road with 4 overnights
Start at Da Lat.
Drive for about 3 hours, then stop in Khánh Hòa Province and stay for about 2 hours.
Next, drive for another 4 hours then stop in Quang Ngai province. Stay overnight.
The next day, drive for about 3 hours, then stop in Hương Thủy (Thừa Thiên Huế Province) and stay for about 2 hours. Next, drive for another 4 hours then stop in Ha Tinh Province. Stay overnight.
The next day, drive for about 3 hours, then stop in Nghi Sơn Town (Thanh Hoa) and stay for about 2 hours. Next, drive for another 4 hours then stop in Lạng Sơn Province. Stay overnight.
Finally, drive for about 0.1 hours and arrive in Lang Son.
To give you a better estimate of real-life travel, we've put together a flight itinerary with actual airports. Eventually you'll be able to customize this plan, choosing your own airports and flights. But for now, here's an example we've selected to give you an idea of how traveling might work between airports.
Departure airport: Lien Khuong Airport (DLI)
Arrival airport: Van Don International Airport (VDO)
With the airports selected, we can estimate the travel time to and from the airport, based on how far the airport is from downtown.
Getting to the airport: 32 minutes
Getting to your destination: 1 hour 50 minutes
Now finally, let's look at an example flight from DLI to VDO and figure out how long it would take to fly including take-off and landing, and time to taxi on the runway.
Commercial flight time: 1 hour 18 minutes
So now we can finally get an idea of the total travel time from Da Lat to Lang Son including time spent getting to/from the airports, an estimated wait time of 2 hours at the airport for TSA security lines and waiting at the gate, and the actual flight itself.
Total travel time: 5 hours 40 minutes
Now let's assume you have a private jet and you can fly in the fastest possible straight line between Da Lat and Lang Son. Because of the curvature of the Earth, the shortest distance is actually the "great circle" distance, or "as the crow flies" which is calculated using an iterative Vincenty formula.
Flight time from Da Lat, Lam Dong Province to Lang Son, Lang Son Province is 1 hour 24 minutes under avarage conditions.
Our flight time calculator assumes an average flight speed for a commercial airliner of 500 mph, which is equivalent to 805 km/hr or 434 knots.
Actual flight times may vary depending on aircraft type, cruise speed, routing, weather conditions, passenger load, and other factors.