Jeju Island is famous for its beaches so there are also coastal road that you can enjoy while driving. My hubby and I usually go driving on weekend or when we visit famous attractions we usually go home using the coastal roads. The one that we like the most is the Coastal road from Jeju City to Gwagji Beach and sometimes until Hallim to visit Hyopjae Beach.
Going driving at the coastal road is the best activity that you can do in Jejudo specially in winter where you can view the famous beaches without going out of the car.
Here's the Aewol coastal road view.
Have you ever seen a UFO restaurant? It is located in Aewol if you drive along the coastal road.
More coastal road sightseeings.
Here's the road. We stopped by for a while at the view point where you can see the beaches, sea and the road.