Aleksandra Kowalczuk solidified her status as a formidable force in international taekwondo by earning the gold medal at the 2018 European Taekwondo Championships in Kazan. Competing in the highly competitive +73 kg weight category, Kowalczuk notably defeated then-world champion Bianca Walkden in the final to claim her first senior European title. This milestone built upon her early career successes, which included a silver medal at the 2013 European Junior Championships in Porto (+68 kg), followed by a bronze medal at the 2015 European U21 Championships in Bukarest (+73 kg) and another silver at the 2016 European U21 Championships in Grozny (+73 kg). Following her European Championship triumph, Kowalczuk continued to demonstrate her dominance on the global stage, securing two gold medals at the prestigious World Taekwondo Grand Prix series in 2018.
The same year, she contributed to a team bronze medal at the Universiade in Chengdu, showcasing her versatility across formats. Most recently, Kowalczuk continued to deliver top-tier performances, securing a silver medal at the 2023 European Games in KrakówMa?opolska in the +73 kg division. Throughout her career, representing Taekwondo AZS Pozna?, she has consistently been a prominent figure in Polish taekwondo, renowned for her skill and competitive spirit at the highest national and international levels. Her trajectory of success, marked by significant championship titles and consistent medal finishes, underscores her dedication and makes her a compelling figure for partnerships and endorsements.