5150 Poznań, set against the backdrop of the vibrant city of Poznań, Poland. This iconic event is not just about competition; it's a journey through history, nature, and the heart of triathlon in Poland. Swim - Dive into History at Lake Kierskie The adventure begins at Lake Kierskie, a place steeped in triathlon history. This picturesque lake, just outside Poznań, holds a special place in the hearts of triathletes as it was here that the first-ever triathlon competition in Poland took place in ...