The Hainan western ring high-speed railway (Chinese: 海南西环高速铁路; pinyin: Hǎinán xī huán gāosù tiělù, often abbreviated [海南]西环高铁; [Hǎinán] Xī huán gāotiě) is a high-speed railway operated by China Railway High-speed in Hainan Province. It started operation on 30 December 2015. The 344-km long rail line runs along the western half of the island's coastline, from Haikou railway station in the north to Sanya railway station. At its two end points, it connects with the existing Hainan eastern ring high-speed railway (opened in 2010), thus forming a high-speed railway ring around the entire island.