20 km through Gasiri's volcanic oreum and pastoral scenery — no qualifying index required
The Jeju20K is held in Gasiri village on the eastern side of Jeju Island, offering an accessible introduction to the island's trail running terrain. The route showcases Jeju's distinctive Oreum (volcanic cones), farmland, and grassland scenery, passing through the Gammajang path — one of the island's most celebrated scenic walks. Suitable for runners without prior ultra experience, it requires only a UTMB World Series account rather than a qualifying UTMB Index score.
Suitable for first-timers
Seogwipo, Jeju, South KoreaOctober 03, 2026
| Location | km | Elevation |
|---|---|---|
Start Start | 0.0 | 274 m |
Finish Finish | 20.0 | 274 m |
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