How many kilometers is it from Haikou to Sanya?

It's about 320 kilometers from Haikou to Sanya.

At the end of 1989, construction started from Haikou to expressway (right) in Sanya, which is 250 kilometers long on the east line around Hainan Island, and it was completed and opened to traffic in February 1995. Since then, the road has been widened and connected with expressway, which is 324 kilometers west of the roundabout, and it was opened to traffic in March. 1999 formed the roundabout expressway.

Extended data:

In May 2002, Haikou to Wenchang expressway was completed and opened to traffic; Haikou, which was completed and opened to traffic in August 2008, propped up a new traffic skeleton in the south of Haikou, closed the north side of expressway, Hainan Island, and improved the Hainan highway network.

20 12 12 The completion and opening to traffic of expressway around Sanya has completely integrated expressway on the east line and expressway on the west line, becoming a real expressway around the island, with the mileage of expressway in the province reaching 752 kilometers.

People's Network-Traffic shortens the distance between the city and Hainan's "two-hour traffic circle"