Sunday, June 21, 2026 · Hoorn, Netherlands
109 days until race day
IRONMAN 70.3 Westfriesland takes place in Hoorn, Netherlands as an IRONMAN 70.3 race. Athletes face a freshwater lake swim, followed by a flat and fast bike course and a flat run course.
Lake
1.9 km / 1.2 mi
Flat
90 km / 56 mi
Flat
21.1 km / 13.1 mi
Get open-water swim practice in lakes or similar flat-water venues to build comfort with reduced visibility.
Focus on sustained power and aerodynamics for the flat bike course — time trial position and pacing are key.
Practice running at a consistent pace on flat terrain — tempo runs and negative splits will pay off on race day.
Test your fueling strategy during long brick sessions to find the right mix of calories and hydration for 70.3 miles.
Transition's AI coach builds a training plan specifically adapted for this course. Your plan accounts for the lake swim conditions, the flat 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 70.3 plan adapts to your fitness, schedule, and this specific course. Start training smarter today.
View IRONMAN 70.3 PlanTraining for IRONMAN 70.3 Westfriesland requires a structured plan that addresses the specific course demands: a lake swim, flat 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 70.3 Westfriesland takes place in Hoorn, Netherlands as an IRONMAN 70.3 race. Athletes face a freshwater lake swim, followed by a flat and fast bike course and a flat run course. The race takes place in Hoorn, Netherlands and attracts athletes from around the world.
Most athletes need 16-20 weeks of dedicated training for a IRONMAN 70.3. 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.
