SEOUL 100K took place on Sat, Sep 19, 2026 in Seoul, South Korea. The main route is 100 km.
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- Date
- Sat, Sep 19, 2026
- Start
- Seoul 🇰🇷
- Distance
- 100 km
- Level
- Open to all
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Start freeSeoul 100K is an international ultra trail running race showcasing a blend of nature and urban landscapes by traversing mountains, rivers, and historic landmarks in Seoul.
What this race demands
Seoul 100K requires continuous locomotion across 100 kilometers of mixed mountain, river, and urban terrain in Seoul during September.
Ultra-distance endurance
Covering 100 kilometers demands sustained aerobic capacity and the muscular endurance to keep moving for many consecutive hours.
Terrain versatility
Traversing mountains, rivers, and historic urban landmarks requires the adaptability to transition between technical trail surfaces and hard ground efficiently.
Given the ultra-distance format requiring many hours of continuous exertion, athletes should target 60 to 90 grams of carbohydrates per hour to sustain energy output.
Frequently asked questions
When is SEOUL 100K?
SEOUL 100K took place on Sat, Sep 19, 2026 in Seoul, South Korea.
How long is SEOUL 100K?
The main route is 100 km.
What does SEOUL 100K demand?
Seoul 100K requires continuous locomotion across 100 kilometers of mixed mountain, river, and urban terrain in Seoul during September.
Who is SEOUL 100K for?
SEOUL 100K is open to all participants.
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