Sea distance from Barcelona to Sydney
The sea route from Barcelona (Spain) to Sydney (Australia) is about 9,938 nautical miles, which is 18,405 km or 11,437 statute miles. The route transits Suez Canal and Bab-el-Mandeb. That is about 7% 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) | 82d 20h |
| Sailboat, average (6 kn) | 69d 0h |
| Displacement trawler (8 kn) | 51d 18h |
| Fast trawler (10 kn) | 41d 10h |
| Planing motor yacht (15 kn) | 27d 15h |
| Fast motor yacht (20 kn) | 20d 17h |
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 Barcelona to Sydney 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 Sydney from Barcelona by sea?
About 9,938 nautical miles (18,405 km / 11,437 statute miles) along the practical sea route, which transits Suez Canal and Bab-el-Mandeb. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Barcelona to Sydney?
At a typical sailing average of 6 knots it is about 69d 0h underway. A 10-knot trawler needs about 41d 10h, and a 20-knot motor yacht about 20d 17h. 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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