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How large is Hainan Island from north to south?

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beach on Wuzhizhou Island — Hainan Beach on Wuzhizhou Island, far southern Hainan province, China.

Hainan Island, which is the main land territory of the Hainan province in southern China, is approximately oval in shape. At its widest point, the island measures about 130 miles (210 km) from north to south.1