Distance between Udon Thani, Thailand and Nanjing, China
2290 km = 1423 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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Udon Thani, Thailand
Country: ThailandUdon Thani’s coordinates: 17°24′56″ N, 102°47′09″ E
Population: 247,231
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Nanjing, China
Country: ChinaNanjing’s coordinates: 32°03′42″ N, 118°46′40″ E
Population: 7,165,292
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