Sea distance from Istanbul to Karachi
The sea route from Istanbul (Turkey) to Karachi (Pakistan) is about 3,650 nautical miles, which is 6,761 km or 4,201 statute miles. The route transits Suez Canal and Bab-el-Mandeb. That is about 72% 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) | 30d 10h |
| Sailboat, average (6 kn) | 25d 8h |
| Displacement trawler (8 kn) | 19d 0h |
| Fast trawler (10 kn) | 15d 5h |
| Planing motor yacht (15 kn) | 10d 3h |
| Fast motor yacht (20 kn) | 7d 15h |
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 Istanbul to Karachi 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 Karachi from Istanbul by sea?
About 3,650 nautical miles (6,761 km / 4,201 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 Istanbul to Karachi?
At a typical sailing average of 6 knots it is about 25d 8h underway. A 10-knot trawler needs about 15d 5h, and a 20-knot motor yacht about 7d 15h. 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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