woman walking on green grass field

TransJeju by UTMB 20K

20 km·508m gain·Jeju City
ultra100 mile100k50kmountainforesthigh altitudetechnicaltrailqualifierpoint to point

Photo by Massimo Sartirana on Unsplash

Distance20 km
Gain508m
Date2 Oct 2026
Difficulty2/5

About This Race

The 20-kilometer course introduces runners to Jeju's volcanic terrain with 508 meters of elevation gain. This 1 Running Stone event offers an excellent opportunity for newer trail runners to experience the island's distinctive landscape.

The 20-kilometer course introduces runners to Jeju's volcanic terrain with 508 meters of elevation gain. This 1 Running Stone event offers an excellent opportunity for newer trail runners to experience the island's distinctive landscape.

Elevation

508m(1,667 ft)

Elevation gain

Map showing TransJeju by UTMB 20K location

Detailed elevation profile coming soon

Practical Info

Nearest Airport

CJU - Jeju International Airport

Best For

experienced_ultrarunnersmountain_runnersinternational_competitors

Notable Features

TransJeju offers a rare opportunity to run through a UNESCO World Heritage volcanic landscape, featuring dramatic elevation changes from sea level to South Korea's highest peak. The event showcases extraordinary biodiversity across multiple climate zones, from subtropical coastal areas to subarctic mountain forests, all within a single island setting.