IRONMAN Japan South Hokkaido takes place on Sun, Sep 13, 2026 in Hokkaido, Japan. The main route is 226 km.
- Date
- Sun, Sep 13, 2026
- Start
- Hokkaido 🇯🇵
- Distance
- 226 km
- Level
- Open to all
Full-distance IRONMAN triathlon in South Hokkaido, Japan: a 3.8 km swim, 180 km bike and 42.2 km run (226 km total).
What this race demands
IRONMAN Japan South Hokkaido demands complete multi-sport durability across a continuous 226 km full-distance triathlon.
Aero and bike stamina
The 180 km cycling leg requires prolonged time trial positioning and sustained muscular endurance over a very long duration.
Marathon resilience
The final 42.2 km run tests structural durability and pacing discipline after an exhausting swim and bike.
A sustained intake of 60 to 90 grams of carbohydrate per hour is required across the extended duration to maintain output through the bike and run.
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