A tough-bike, fast-run Atlantic race with dramatic Sintra scenery and strong late-season conditions.
Sheltered Atlantic bay swim in Cascais harbour, cool water with the occasional swell rolling in.
Genuinely challenging loops climbing into the Sintra hills, with long drags, technical descents and exposed coastal wind.
Flat, fast run along the Cascais seafront and marina promenade, four laps with big crowds.
Actual monthly averages from the last 3 years (Open-Meteo). Real race day may vary.
Water temp uses athlete-reported values first, then official race data, then the marine archive (sea swims, measured at the nearest offshore point). Values tagged est. are modelled from recent air temperature for lakes and rivers, where no observational data exists.
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