About Seoul 100K

Running through the nature of SEOUL, the harmonious place where mountains and city center live together.

SEOUL 100K is world’s most unique international ultra trail-running event where you can meet forest, mountains, river, fortress walls in the city of Seoul.

The best international trail running event in Seoul, SEOUL 100K, its course contains Mt.Bukhan and Mt.Dobong that are national park of Korea and natural roads that surround the city of Seoul.
You can also run through Hangang river that cross the hearth of Seoul and the fortress walls where 2,000 years of history still alive, in the course of SEOUL 100K.
Enjoy and hope to take the chance running the biggest trail running event, where you can feel the nature in the city of SEOUL with 10 million people.