San Francisco to Seattle — sea route & marine weather
The sea route from San Francisco (USSFO) to Seattle (USSEA) is about 886 nm — about 4 days at 10 kn. The baseline track is drawn on the chart; Calculate replans it for your vessel and live weather.
Passage facts| Sea-route distance | 886 nm |
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| Passage time at 10 kn | about 4 days |
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| Great-circle distance | 587 nm |
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| San Francisco | 37°49.0′N 122°25.0′W |
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| Seattle | 47°36.0′N 122°20.0′W |
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| Reference vessel | 4.5 m draft, 10 kn cruise |
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Marine forecast
No forecast frames are loaded right now. The live chart below shows conditions as soon as the next model run is ingested.
Frequently asked
How far is it from San Francisco to Seattle by sea?
The water route is 886 nm (1,640 km), computed on WXMarine's maritime routing network. The same distance applies on the return passage from Seattle to San Francisco.
How long does the passage from San Francisco to Seattle take?
about 4 days at a 10 kn cruise. Scale by your own speed: at half the speed it takes about twice as long. The planner on this page recalculates for your vessel and live weather.