Distance from Hanoi to Lạng Sơn
How far is it from Hanoi to Lạng Sơn? About 82 mi in a straight line and 107 mi by road. Driving time, flight time, midpoint and route details.
Hanoi and Lạng Sơn are about 82 mi (132 km) apart in a straight line. By road that works out to roughly 107 mi (172 km), a drive of about 1 hr 55 min. A nonstop flight covers the great-circle distance in approximately 39 min.
| Straight-line distance | 82 mi / 132 km |
| Road distance (est.) | 107 mi / 172 km |
| Driving time (est.) | 1 hr 55 min |
| Nonstop flight (est.) | 39 min |
| Driving fuel (est., 1-way) | $13 |
| Typical flight fare | $80–$250 |
| Geographic midpoint | 21.439, 106.300 |
How these estimates work
Straight-line distance uses the haversine formula on each city's coordinates. Road distance applies a circuity factor (~1.2–1.4×) and driving time a blended average speed. Flight time uses typical jet cruise speed plus ~30 minutes for taxi, climb and descent. Treat all figures as planning estimates.
Frequently asked questions
Hanoi to Lạng Sơn is about 82 mi (132 km) in a straight line, and roughly 107 mi (172 km) by road.