Sea distance from Felixstowe to Istanbul
The sea route from Felixstowe (United Kingdom) to Istanbul (Turkey) is about 3,121 nautical miles, which is 5,779 km or 3,591 statute miles. The route transits Strait of Dover and Strait of Gibraltar and Corinth Canal. That is about 139% 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) | 26d 0h |
| Sailboat, average (6 kn) | 21d 16h |
| Displacement trawler (8 kn) | 16d 6h |
| Fast trawler (10 kn) | 13d 0h |
| Planing motor yacht (15 kn) | 8d 16h |
| Fast motor yacht (20 kn) | 6d 12h |
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 Felixstowe to Istanbul 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 Istanbul from Felixstowe by sea?
About 3,121 nautical miles (5,779 km / 3,591 statute miles) along the practical sea route, which transits Strait of Dover and Strait of Gibraltar and Corinth Canal. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Felixstowe to Istanbul?
At a typical sailing average of 6 knots it is about 21d 16h underway. A 10-knot trawler needs about 13d 0h, and a 20-knot motor yacht about 6d 12h. 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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