Distance between Riyadh, Saudi Arabia and Siena, Italy
3826 km = 2377 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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Riyadh, Saudi Arabia
Country: Saudi ArabiaRiyadh’s coordinates: 24°41′15″ N, 46°43′18″ E
Population: 4,205,961
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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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