Visit Jeju introduces Olle Trail 10 as a coastal and historic walking route of about 17.3 km and four to five hours, from Hwasun Geumsorae Beach to Hamo Sports Park. It passes the Sanbangsan area, Sagye coast, Songaksan coastal paths and heritage around Altteureu Airfield. Some sections have previously been rerouted for conservation and safety. Do not rely on an old printed map: check the current Jeju Olle detour and access notices. There are rocks and slopes, so plan for your fitness, weather and return transport.