IRONMAN Copenhagen takes place on Sun, Aug 22, 2027 in Copenhagen, Denmark. The main route is 226 km.
- Date
- Sun, Aug 22, 2027
- Start
- Copenhagen 🇩🇰
- Distance
- 226 km
- Level
- Open to all
Your 46-week plan to IRONMAN Copenhagen
The Base phase starts this week. Built around your fitness and adjusted every day as your form changes; attach the course and it prepares for the climbs too.
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Experience IRONMAN Copenhagen: a 3.8 km bay swim, 180 km rolling bike ride through North Zealand, and a flat 42.2 km run past iconic city landmarks.
What this race demands
IRONMAN Copenhagen requires an athlete to sustain output across a 3.8 km swim, 180 km rolling bike ride, and 42.2 km run in August conditions. Success depends on disciplined pacing across all three disciplines and managing multi-hour energy intake.
Aero Endurance
The 180 km bike leg through North Zealand requires maintaining an efficient aerodynamic position and steady power output over many hours in the saddle.
Run Durability
The flat 42.2 km run demands muscular durability to absorb repetitive impact and maintain running form after completing a long swim and bike ride.
Thermal Management
An August race date in Denmark requires proactive cooling and hydration strategies to prevent heat strain during the extended duration of the event.
Averaging 60 to 90 grams of carbohydrates per hour is necessary to sustain glycogen levels across the prolonged duration of the bike and run legs.
Estimated finish times
Estimates by level, not promises. Your own number depends on your fitness on the day.
Your road to race day
Race day at IRONMAN Copenhagen is 46 weeks away. This is how a coach divides that time. The first phase starts now.
01Base34 weeks · Oct 5, 2026 – May 30, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · May 31, 2027 – Jul 11, 2027
Progressive overload: training load climbs in waves, with harder weeks stacked on the base and planned recovery weeks that let the gains land.
03Peak3 weeks · Jul 12, 2027 – Aug 1, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Aug 2, 2027 – Aug 15, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Aug 16, 2027 – Aug 22, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is IRONMAN Copenhagen?
IRONMAN Copenhagen takes place on Sun, Aug 22, 2027 in Copenhagen, Denmark.
How long is IRONMAN Copenhagen?
The main route is 226 km.
What does IRONMAN Copenhagen demand?
IRONMAN Copenhagen requires an athlete to sustain output across a 3.8 km swim, 180 km rolling bike ride, and 42.2 km run in August conditions. Success depends on disciplined pacing across all three disciplines and managing multi-hour energy intake.
Who is IRONMAN Copenhagen for?
IRONMAN Copenhagen is open to all participants.
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