If you like undeveloped beaches and the salty smell of fish, skip out to Sapisdo (삽시도), 13km from Daecheon. There isn’t much to do here except hit the sand, wander the roads, hike a coastal trail and admire the sunset if you stay the night. You’ll see residents mending nets, collecting shellfish at low tide or working in rice paddies. The pace speeds up in summer with more than 50 minbak (private homes with rooms for rent) and pensions drawing visitors from the mainland.
A good three-hour hike, about 8km, runs along the south-western coast, roughly from Jinneomeo Beach to the Bamseom ferry terminal. Some English-language signage is on the trail. The large island map at each ferry terminal shows some trail details.