Sea distance from Seattle to Anchorage
The sea route from Seattle (United States) to Anchorage (United States) is about 1,625 nautical miles, which is 3,009 km or 1,870 statute miles. That is about 30% 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) | 13d 13h |
| Sailboat, average (6 kn) | 11d 7h |
| Displacement trawler (8 kn) | 8d 11h |
| Fast trawler (10 kn) | 6d 19h |
| Planing motor yacht (15 kn) | 4d 12h |
| Fast motor yacht (20 kn) | 3d 9h |
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.
Plan this passage properly
Open Seattle to Anchorage 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 Anchorage from Seattle by sea?
About 1,625 nautical miles (3,009 km / 1,870 statute miles) along the practical sea route. The straight-line distance is shorter, but boats follow coastlines, channels, and traffic lanes.
How long does it take to sail from Seattle to Anchorage?
At a typical sailing average of 6 knots it is about 11d 7h underway. A 10-knot trawler needs about 6d 19h, and a 20-knot motor yacht about 3d 9h. 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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