Welcome to the exhilarating IRONMAN 70.3 Tallinn in the heart of Estonia, where athletes embark on a journey of endurance through a breathtaking landscape. The triathlon kicks off with a 1.9 km swim in the pristine waters of the Lake of Harku. Picture yourself gliding through the cool, refreshing lake, surrounded by the tranquility of nature. With just one lap, you'll conquer the swim against the backdrop of Estonia's natural beauty, with an average water temperature of 64°F/18°C providing the ...