HALF IRONMAN 70.3 Duisburg in Germany, Begin your adventure with a 1.9 km swim on the regatta course of 'Sportpark Duisburg.' Picture the exhilaration of plunging into the cool waters, surrounded by the cheers of spectators lining the shore. With an average water temperature of 70°F (21°C), it's a refreshing start to a challenging journey. Transition from water to wheels as you embark on a 90.1 km Ventum bike course winding through Duisburg. The 2-lap journey explores the heart of the city, ...