The first and original course of Jeju's island-circling Olle Trail network, linking volcanic cones (oreum) to the coast on the island's eastern side.
| Distance | 15.1 km |
| Recommended time | 1 day(s) |
| Best season | Spring (March-May, canola flowers) and autumn (September-November, silver grass); avoid peak summer heat and August-September typhoon season |
| Getting to the start | Reachable by local bus from Jeju City to the Siheung starting point (Olle passport stamp books are sold at Jeju Airport and the Jeju Olle headquarters). |
| Getting back from the end | Ends near Gwangchigi Beach and Seopjikoji, with bus connections back toward Jeju City or on to Seongsan Ilchulbong. |
Starting point of the entire Olle Trail network — this is Course 1, the original route created in 2007. Olle passport stamp station located here.
One of the volcanic cones (oreum) the route climbs, offering panoramic views over the surrounding fields and coastline.
A stretch of coastal walking with views out to nearby Udo Island, a common rest point with small cafes.
Finish point near Seopjikoji, a scenic coastal headland popular for its dramatic ocean views. Olle passport stamp station located here.