Sea distance from Houston to Sydney
The sea route from Houston (United States) to Sydney (Australia) is about 9,354 nautical miles, which is 17,324 km or 10,765 statute miles. The route transits Panama Canal. That is about 25% 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) | 77d 23h |
| Sailboat, average (6 kn) | 64d 23h |
| Displacement trawler (8 kn) | 48d 17h |
| Fast trawler (10 kn) | 38d 23h |
| Planing motor yacht (15 kn) | 26d 0h |
| Fast motor yacht (20 kn) | 19d 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 Houston 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 Houston by sea?
About 9,354 nautical miles (17,324 km / 10,765 statute miles) along the practical sea route, which transits Panama Canal. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Houston to Sydney?
At a typical sailing average of 6 knots it is about 64d 23h underway. A 10-knot trawler needs about 38d 23h, and a 20-knot motor yacht about 19d 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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