Hainan sports travel
The sports visitors actually book are surfing, golf and easy cycling. Everything else is a hotel activity, not a reason to cross the island.
Surf, golf, bikes
Riyue Bay in Wanning is the surf beach, with rental boards and lessons on the sand in season. Beginners should take a lesson; the same bay is used by people who already surf.
Golf clusters around Haikou, Chengmai and the east coast. Cycling is easiest on resort paths and short coastal stretches, not on the fast ring expressway.
Safety
Sea sports stop when the operator stops them. Do not swim against a red flag because a brochure showed a photo.
The ring expressway is for cars. Use a local path or a guided ride if you want a bike day.
Continue exploring Hainan
Open another guide — beaches, visa & entry, or a ready itinerary.