Half Ironman 70.3 Poznań, where the endurance of athletes converges with the vibrant spirit of Poznań in a triumphant fusion of nature, speed, and history. Embark on a refreshing swim in the crystal-clear waters of Lake Kierskie, with a rolling start format ensuring a seamless beginning to your race. The lake's embrace sets the stage for a distinctive start to your Half Ironman journey, featuring an average water temperature of 65°F / 18°C for optimal racing conditions. Transitioning from the ...