IRONMAN 70.3 Cascais takes place on Sat, Oct 23, 2027 in Cascais, Portugal. The main route is 113 km.
- Date
- Sat, Oct 23, 2027
- Start
- Cascais 🇵🇹
- Distance
- 113 km
- Level
- Open to all
Your 52-week plan to IRONMAN 70.3 Cascais
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.
Build my planFree to start · No credit card
The 70.3-mile triathlon features a one-loop swim, a one-loop bike course along the coast and through Sintra scenery, and a two-loop seafront run.
Your road to race day
Race day at IRONMAN 70.3 Cascais is 52 weeks away. This is how a coach divides that time. The first phase starts now.
01Base40 weeks · Oct 25, 2026 – Jul 31, 2027
Aerobic foundation: mostly steady endurance work that grows the aerobic engine and the durability the later phases stand on.
02Build6 weeks · Aug 1, 2027 – Sep 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 · Sep 12, 2027 – Oct 2, 2027
The hardest weeks of the plan: race-specific intensity at nearly full training load, sharpening exactly what this race asks for.
04Taper2 weeks · Oct 3, 2027 – Oct 16, 2027
Volume drops while intensity stays: short, sharp efforts keep the legs awake as fatigue drains away.
05Race week1 week · Oct 17, 2027 – Oct 23, 2027
Openers, rest and logistics. The work is done; the job now is arriving fresh.
Frequently asked questions
When is IRONMAN 70.3 Cascais?
IRONMAN 70.3 Cascais takes place on Sat, Oct 23, 2027 in Cascais, Portugal.
How long is IRONMAN 70.3 Cascais?
The main route is 113 km.
Who is IRONMAN 70.3 Cascais for?
IRONMAN 70.3 Cascais is open to all participants.
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