There’s some 13 km of waterfront running along Sanya Bay. Most of it is along a rubberized running track that winds through lush vegetation, between Sanyawan Rd. and the beach. The beach is also runnable!  There are some nice views of Sanya Bay. Notes: Can get crowded, best to run early. Our thanks to Joylin Nodwell for suggesting this route!

Sanya Bay Beach
Sanya Bay Beach. Joylin Nodwell

The heart of the route starts just west of the airport. It also extends for ~4 km east, with a couple of road sections. Follow the path, as it winds through a garden-like atmosphere, with some views of bay. There are meter markers along the way. The western end of the path is at Xidao Island Pier. 

Variation: The beach is quite wide and very runnable, with firm sand near the water.