IRONMAN Portugal-Cascais
IRONMAN Portugal-Cascais on 17 October 2026 runs both distances from the bay: the full at 3.8 km / 180 km / 42.2 km and the half at 1.9 km / 90 km / 21.1 km.
The swim in Cascais Bay is protected by the headland, which matters on this coast. A few kilometres in either direction the Atlantic is a surf beach, so the calm bay is a local exception rather than the character of the sea here. In October the water is cold enough for a full wetsuit.
The bike runs along the Estoril coast and inland towards Sintra, so the flat description flatters a course with real climbing in it, and the wind off the Atlantic is constant rather than occasional.
Cascais is 40 minutes from Lisbon airport and on the train line into the city, which makes this the easiest full distance in Iberia to travel to.
Who it's for
Built for experienced triathlon athletes.
Good fit if you…
- are experienced in triathlon and want a hard race
- want a well-known, high-status race
- want a choice of distances
Maybe not if you…
- are brand-new to triathlon: start with something shorter
What should you know about IRONMAN Portugal-Cascais?
- Date
- Saturday, 17 October 2026
- Format
- Full Distance / 140.6 · Half / 70.3
- Water temp
- 19.6°C · 67°F
Need to know
When is IRONMAN Portugal-Cascais 2026?
IRONMAN Portugal-Cascais takes place on Saturday, 17 October 2026. Dates can move year to year, so confirm the exact day on the official race page before you book travel.
How do you register for IRONMAN Portugal-Cascais?
Where does IRONMAN Portugal-Cascais take place?
Cascais, Portugal
FAQs
What do athletes ask about IRONMAN Portugal-Cascais?
Where is IRONMAN Portugal-Cascais held?
IRONMAN Portugal-Cascais is held in Cascais, Portugal. The race page has the venue location and a map, and links straight through to the official site for the precise start area.
What distances can you race at IRONMAN Portugal-Cascais?
IRONMAN Portugal-Cascais offers Full Distance / 140.6 and Half / 70.3. The Full Distance / 140.6 is a 3.8 km swim, 180 km bike and 42.2 km run. Pick your distance and enter on the official site. Each format usually has its own start wave and cut-offs.
How hard is IRONMAN Portugal-Cascais?
IRONMAN Portugal-Cascais is rated elite (5/5) for difficulty on FindMyNextRace, based on its distance, terrain, and the level of the field. Use that as a guide and match it to your current fitness before you commit.
What's the water temperature at IRONMAN Portugal-Cascais?
The swim at IRONMAN Portugal-Cascais is around 19.6°C (67°F), based on the official average for the venue. Water temperature drives wetsuit rules, so check the organiser's current wetsuit policy before race day.
How do I enter IRONMAN Portugal-Cascais?
You enter IRONMAN Portugal-Cascais through the official organiser. Registration is handled on their site, and FindMyNextRace links you straight there. Places for popular editions can sell out early, so register as soon as entry opens.
Is IRONMAN Portugal-Cascais part of a race series?
Yes, IRONMAN Portugal-Cascais is part of the IRONMAN series. Series events often share a qualification, points, or championship pathway, so if you're chasing the series, check how this race fits its calendar.
How should I train for IRONMAN Portugal-Cascais?
Training for IRONMAN Portugal-Cascais depends on your target distance and current fitness. Most athletes follow a structured block of 12–20 weeks for a Full Distance / 140.6 effort. Build a plan tailored to your race date and level with AI Training Plan (https://aitrainingplan.app).
You might also like
Similar triathlon races.