Sunday, September 13, 2026 · Hokkaido, Japan
193 days until race day
Held in Hokkaido, Japan, IRONMAN Japan South Hokkaido is an full-distance IRONMAN event. Athletes face an ocean swim, followed by a rolling bike course with moderate elevation changes and a flat and fast run course.
Ocean
3.8 km / 2.4 mi
Rolling
180 km / 112 mi
Flat
42.2 km / 26.2 mi
Train in ocean or surf conditions when possible, and master sighting technique to swim a straight line in open water.
Train on rolling terrain to build the ability to manage power on short climbs while maintaining speed on descents.
Train for even pacing on flat ground with race-pace tempo runs and practice holding form when fatigued.
Nail your nutrition by testing your exact race-day plan during long brick sessions — what works at hour one may not work at hour eight.
Transition's AI coach builds a training plan specifically adapted for this course. Your plan accounts for the ocean swim conditions, the rolling bike terrain, and the flat run profile — so you show up on race day fully prepared.
Your plan adjusts weekly based on your progress, recovery, and schedule changes.
Workouts target the exact demands of this course's swim, bike, and run profiles.
Nutrition rehearsal, taper optimization, and pacing strategy built into your plan.
“Transition has helped me improve my Ironman training more than any other method I've encountered in my triathlon journey. It's incredibly precise and personalized.”
Carlos Rebelo — Triathlete
Our AI-powered ironman plan adapts to your fitness, schedule, and this specific course. Start training smarter today.
View IRONMAN PlanTraining for IRONMAN Japan South Hokkaido requires a structured plan that addresses the specific course demands: a ocean swim, rolling bike, and flat run. Transition's AI coach builds a personalized plan that adapts to your fitness level and progressively prepares you for these exact conditions.
Held in Hokkaido, Japan, IRONMAN Japan South Hokkaido is an full-distance IRONMAN event. Athletes face an ocean swim, followed by a rolling bike course with moderate elevation changes and a flat and fast run course. The race takes place in Hokkaido, Japan and attracts athletes from around the world.
Most athletes need 24-30 weeks of dedicated training for a full IRONMAN. This allows sufficient time for base building, race-specific preparation, and a proper taper. Transition's AI coach can create a plan that fits your timeline and current fitness.
