IRONMAN 70.3 Bolton takes place on Sun, Jun 6, 2027 in Bolton, United Kingdom. The main route is 113.1 km.
- Date
- Sun, Jun 6, 2027
- Start
- Bolton 🇬🇧
- Distance
- 113.1 km
- Climbing
- 840 m
- Level
- Open to all
Race IRONMAN 70.3 Bolton with a swim in Pennington Flash Country Park, a bike ride through various villages, and a run around Bolton Town Centre and Queen's Park.
Official event pageWhat this race demands
IRONMAN 70.3 Bolton requires sustained pacing across a 113.1 km triathlon format encompassing a swim, bike ride, and run.
Multisport transition
Athletes must manage pacing and physiological shifts across three distinct disciplines: swimming, cycling, and running.
Endurance capacity
Covering the 113.1 km total distance demands significant aerobic capacity and muscular endurance over several hours of continuous effort.
Aim for 60 to 90 grams of carbohydrates per hour to maintain energy output throughout the duration of the event.
Your road to race day
Race day at IRONMAN 70.3 Bolton is 41 weeks away. This is how a coach divides that time. The first phase starts now.
01Base29 weeks · Aug 24, 2026 – Mar 14, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Mar 15, 2027 – Apr 25, 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 · Apr 26, 2027 – May 16, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · May 17, 2027 – May 30, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · May 31, 2027 – Jun 6, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
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