Sea distance from Piraeus to Tokyo
The sea route from Piraeus (Greece) to Tokyo (Japan) is about 8,641 nautical miles, which is 16,004 km or 9,944 statute miles. The route transits Suez Canal and Bab-el-Mandeb and Strait of Malacca. That is about 68% 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) | 72d 0h |
| Sailboat, average (6 kn) | 60d 0h |
| Displacement trawler (8 kn) | 45d 0h |
| Fast trawler (10 kn) | 36d 0h |
| Planing motor yacht (15 kn) | 24d 0h |
| Fast motor yacht (20 kn) | 18d 0h |
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 Piraeus to Tokyo 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 Tokyo from Piraeus by sea?
About 8,641 nautical miles (16,004 km / 9,944 statute miles) along the practical sea route, which transits Suez Canal and Bab-el-Mandeb and 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 Piraeus to Tokyo?
At a typical sailing average of 6 knots it is about 60d 0h underway. A 10-knot trawler needs about 36d 0h, and a 20-knot motor yacht about 18d 0h. 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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