Distance between Seattle, Washington, USA and Vacaville, California, USA
1030 km = 640 miles
We assume a spherical Earth as a close approximation of the true shape of the Earth (an oblate spheroid). The distance is calculated as great-circle or orthodromic distance between city centres on the surface of a sphere.
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Seattle, USA
Country: USAState: Washington
Seattle’s coordinates: 47°36′22″ N, 122°19′55″ W
Population: 608,660
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Vacaville, USA
Country: USAState: California
Vacaville’s coordinates: 38°21′23″ N, 121°59′15″ W
Population: 92,428
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