Sunday, July 5, 2026 · Thun, Switzerland
123 days until race day
IRONMAN Switzerland Thun takes place in Thun, Switzerland as an full-distance IRONMAN race. The race includes an open-water lake swim, a challenging hilly bike course, and finishes with a flat run leg built for consistent pacing.
Lake
3.8 km / 2.4 mi
Hilly
180 km / 112 mi
Flat
42.2 km / 26.2 mi
Get open-water swim practice in lakes or similar flat-water venues to build comfort with reduced visibility.
Include hill repeats and long climbs in your training to build the climbing strength needed for this course.
Focus on negative-split long runs on flat courses to build the discipline needed for steady pacing off the bike.
For a full IRONMAN, rehearse your nutrition strategy during long training sessions — aim for 60-90g of carbs per hour on the bike.
Transition's AI coach builds a training plan specifically adapted for this course. Your plan accounts for the lake swim conditions, the hilly 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 Switzerland Thun requires a structured plan that addresses the specific course demands: a lake swim, hilly 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.
IRONMAN Switzerland Thun takes place in Thun, Switzerland as an full-distance IRONMAN race. The race includes an open-water lake swim, a challenging hilly bike course, and finishes with a flat run leg built for consistent pacing. The race takes place in Thun, Switzerland 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.
