IRONMAN 70.3 Cascais 2026
An Atlantic bay swim at Cascais, a rolling bike into the Sintra hills, and a coastal run half an hour from Lisbon.
2026 edition completed
This record covers the 17 October 2026 edition of IRONMAN 70.3 Cascais in Cascais, Portugal, with a 1.9 km swim, a 90 km bike and a 21.1 km run. This date belongs to a completed edition. The course record remains available. Course descriptions and coaching notes are archived context for this edition. Check the organiser for a future edition once its date and entry details are published.
“The Atlantic here has more movement than the Med, so practise swimming in swell. The bike into the Sintra hills is harder than the coastal photos suggest.”
The race
The course
Interactive swim route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
One loop from Ribeira Beach around the protected bay to the Fortaleza at Clube Naval. The bay shelters you from the worst of the Atlantic, and the crowd is close enough on the shore to hear.
Interactive bike route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
A single loop out along the Portuguese Riviera past Guincho Beach and into the Sintra-Cascais natural park. Scenic enough to distract you, and exposed enough on the Guincho stretch that the wind will remind you where you are.
Interactive run route in the Course Lab above ↑ Drawn from the official GPX file, checked against this leg's distance.
Two loops from Cascais out along the Guincho road to Cabo Raso and back into town. It is a hard run in wind, and the passage through the Marina is where the noise is. Save something for the second lap.
Not yet confirmed for this edition: bike elevation gain, cut-off times, aid station spacing, water temperature history. We publish these only once they are on the official course page, so check there before you pace off anything here.
Course details verified against the official IRONMAN 70.3 Cascais course page on 13 August 2026. Courses change; the official page is always the last word.
Questions, answered
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Read before you race
Half Ironman Recovery Time: A Practical Return
How Much Harder Is a Full IRONMAN Than a 70.3?
IRONMAN 70.3 Tallinn Training Guide
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Photograph of Cascais, Portugal: Paul Morgan from Goostrey, Cheshire, United Kingdom, CC BY 2.0, via Wikimedia Commons. Not official race photography.
This listing is for information only. Unbroken is not affiliated with, endorsed by, or sponsored by IRONMAN 70.3 Cascais or its organiser. Details are based on publicly available information; names are used descriptively to identify the event. For accurate, up-to-date information and entry, always use the official event website.