Duisburg, North Rhine-Westphalia, Germany
One of the fastest courses in Germany: a flat rowing-lake swim, a closed and flat bike and a pancake-flat multi-lap run.
1.9 km swim in the calm Regattabahn rowing course at the Sportpark — sheltered, non-tidal and easy to sight.
Flat and very fast one-lap 90 km bike on wide closed roads through the Rhine-Ruhr industrial landscape and surrounding parkland.
Flat three-lap 21.1 km run around the Sportpark lakes and Wedau paths, fully spectator-lined.
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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