성남 트레일 레이스 takes place on Sat, Sep 12, 2026 in Seongnam, South Korea. The main route is 100 km.
- Date
- Sat, Sep 12, 2026
- Start
- Seongnam 🇰🇷
- Distance
- 100 km
- Level
- Open to all
SNTR is a trail race that circles the Seongnam Nubigil section and the UNESCO World Heritage Namhansanseong Fortress, traversing Seongnam City's four major mountains.
Official event pageWhat this race demands
This 100-kilometer trail running race across four major mountains and the Namhansanseong Fortress demands exceptional endurance and continuous effort over an extended duration.
Ultra-Distance Endurance
Covering 100 kilometers requires sustained aerobic capacity, muscular durability, and disciplined pacing to manage extreme fatigue over many hours on foot.
Mountain Terrain Adaptation
Traversing four major mountains demands strength and resilience for continuous elevation changes, placing high mechanical stress on the lower limbs.
Given the ultra-distance duration, athletes should consume 60 to 90 grams of carbohydrates per hour to maintain energy output and stave off glycogen depletion.
Your road to race day
Race day at 성남 트레일 레이스 is 3 weeks away. This is how a coach divides that time. The first phase starts now.
01Taper2 weeks · Aug 23, 2026 – Sep 5, 2026
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
02Race week1 week · Sep 6, 2026 – Sep 12, 2026
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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