EN RO

Distance from Hanoi to Dadonghai

Straight line

494 km
307 mi · 267 NM

By road

1,023 km
635 mi

Travel time

15 h 53 min
flight ≈ 1 h 7 min

Direction

SE 128°
initial bearing

Open in the calculator (stops, directions, fuel cost) → Dadonghai → Hanoi

How far is Hanoi from Dadonghai?

Hanoi (Vietnam) and Dadonghai (China) are a medium distance apart: 494 km in a straight line, that is 307 miles or 267 nautical miles. The distance is measured over the Earth's surface (WGS84 ellipsoid) along the shortest possible path.

By road, Hanoi to Dadonghai is 1,023 km (635 miles), about 15 h 53 min by car on the fastest route, without traffic or stops. The road is 107% longer than the straight line.

From Hanoi, Dadonghai lies to the south-east (initial bearing 128°). The route crosses from Vietnam into China. The halfway point is at 19.6318°, 107.6917°.

A direct flight would take about 1 h 7 min (800 km/h cruise plus take-off and landing). The road distance and driving time are calculated on the map from OpenStreetMap roads.

Frequently asked questions

How far is Hanoi from Dadonghai?

By road it is 1,023 km (635 miles) from Hanoi to Dadonghai; in a straight line it is 494 km (307 miles).

How long is the drive from Hanoi to Dadonghai?

About 15 h 53 min on the fastest route (1,023 km), without traffic or stops.

In which direction is Dadonghai from Hanoi?

Dadonghai is to the south-east of Hanoi, at an initial bearing of 128°.

How long is the flight from Hanoi to Dadonghai?

A direct flight would take about 1 h 7 min at an average cruising speed of 800 km/h.

How is the distance calculated?

The straight-line distance is computed on the WGS84 ellipsoid with the Vincenty formula, accurate to the metre. The road distance comes from OpenStreetMap roads.