Distance between Dammam, Saudi Arabia and Siena, Italy
3960 km = 2461 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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Dammam, Saudi Arabia
Country: Saudi ArabiaDammam’s coordinates: 26°26′03″ N, 50°06′11″ E
Population: 768,602
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Siena, Italy
Country: ItalySiena’s coordinates: 43°19′05″ N, 11°19′50″ E
Population: 42,867
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