IRONMAN 70.3 Swansea takes place on Sun, Jul 11, 2027 in Swansea, United Kingdom. The main route is 113.1 km.
- Date
- Sun, Jul 11, 2027
- Start
- Swansea 🇬🇧
- Distance
- 113.1 km
- Level
- Open to all
IRONMAN 70.3 Swansea features a 1.9km swim in the Prince of Wales Dock, a 90km bike course through the Gower Peninsula, and a 21.1km run along Swansea Bay.
Official event pageWhat this race demands
IRONMAN 70.3 Swansea requires sustaining high output across a 1.9km swim, a 90km bike leg through the Gower Peninsula, and a 21.1km run along Swansea Bay.
Aerobic endurance
The combined 113.1 km distance across three distinct disciplines demands a deep aerobic base and efficient pacing to prevent premature fatigue.
Multi-sport transition
Racing across swimming, cycling, and running consecutively requires the muscular adaptability to transition effectively from horizontal to vertical movement patterns.
A continuous intake of 60 to 90 grams of carbohydrates per hour is required to sustain energy levels across the multi-hour duration.
Your road to race day
Race day at IRONMAN 70.3 Swansea is 46 weeks away. This is how a coach divides that time. The first phase starts now.
01Base34 weeks · Aug 24, 2026 – Apr 18, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Apr 19, 2027 – May 30, 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 · May 31, 2027 – Jun 20, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Jun 21, 2027 – Jul 4, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Jul 5, 2027 – Jul 11, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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