Distance between Philadelphia, Pennsylvania, USA and Udon Thani, Thailand

13648 km = 8480 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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Philadelphia, USA

Country: USA
State: Pennsylvania
Philadelphia’s coordinates: 39°57′08″ N, 75°09′49″ W
Population: 1,526,006
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Wikipedia article: Philadelphia

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Udon Thani, Thailand

Country: Thailand
Udon Thani’s coordinates: 17°24′56″ N, 102°47′09″ E
Population: 247,231
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Wikipedia article: Udon Thani

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