Sea distance from Colombo to Shanghai
The sea route from Colombo (Sri Lanka) to Shanghai (China) is about 3,860 nautical miles, which is 7,149 km or 4,442 statute miles. The route transits Strait of Malacca. That is about 40% longer than the direct great-circle line, because the practical route follows coastlines and shipping lanes.
Voyage time by boat speed
Time underway is distance divided by speed. These are continuous-passage figures with no stops or weather margin.
| Boat and speed | Time underway |
|---|---|
| Sailboat, conservative (5 kn) | 32d 4h |
| Sailboat, average (6 kn) | 26d 19h |
| Displacement trawler (8 kn) | 20d 3h |
| Fast trawler (10 kn) | 16d 2h |
| Planing motor yacht (15 kn) | 10d 17h |
| Fast motor yacht (20 kn) | 8d 1h |
Planning estimate, not navigation
This distance is computed over the open Eurostat shipping-lane network. It is a realistic passage length for planning, but your sailed distance will differ with weather routing, currents, draft, and the exact berths you leave from and arrive at. Always verify against official charts.
Building with these numbers? The sea route & distance API returns this figure, voyage time, and route geometry for any port pair in one GET request.
Plan this passage properly
Open Colombo to Shanghai in the Marine OS route planner: it suggests the sea route, then you drag waypoints, set your speed and fuel burn, and check weather and tides along the way.
Open this route in the plannerFrequently asked questions
How far is Shanghai from Colombo by sea?
About 3,860 nautical miles (7,149 km / 4,442 statute miles) along the practical sea route, which transits Strait of Malacca. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Colombo to Shanghai?
At a typical sailing average of 6 knots it is about 26d 19h underway. A 10-knot trawler needs about 16d 2h, and a 20-knot motor yacht about 8d 1h. Add margin for weather, currents, and stops.
How is this distance calculated?
It is computed over the open Eurostat global shipping-lane network, the same kind of network freight routing tools use. It is a realistic planning estimate, not a navigation product: your sailed distance will vary with weather routing, draft, and the exact harbors you use.
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