Distance between Surabaya, Indonesia and Tianshui, China
4714 km = 2929 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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Surabaya, Indonesia
Country: IndonesiaSurabaya’s coordinates: 7°14′57″ S, 112°45′02″ E
Population: 2,374,658
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Wikipedia article: Surabaya
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Tianshui, China
Country: ChinaTianshui’s coordinates: 34°34′46″ N, 105°44′32″ E
Population: 3,500,000
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Wikipedia article: Tianshui
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