Distance between Colombo, Sri Lanka and Tacoma, Washington, USA
13618 km = 8462 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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Colombo, Sri Lanka
Country: Sri LankaColombo’s coordinates: 6°55′54″ N, 79°50′52″ E
Population: 648,034
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Wikipedia article: Colombo
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Tacoma, USA
Country: USAState: Washington
Tacoma’s coordinates: 47°15′10″ N, 122°26′39″ W
Population: 198,397
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Wikipedia article: Tacoma
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