Caribbean city racing: bay swim, closed-highway bike and a run through colonial Old San Juan.
1.9 km swim in the warm, flat San Juan Bay.
Flat and fast bike on closed expressways through the city and out along the coast.
Flat three-lap run through Old San Juan and along the Escambrón waterfront, hot and humid.
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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