Rapperswil-Jona, St. Gallen, Switzerland
A European classic with a genuinely hard, hilly bike and one of the best race-day atmospheres on the circuit.
1.9 km swim in the clean, cool upper basin of Lake Zurich at Rapperswil.
Hilly one-lap bike above the lake including the steep Beichlen climb — one of the toughest 70.3 bikes in Europe.
Two-lap run through Rapperswil's old town with a sharp climb to the castle each lap and huge 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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