Competing as Aleksandra Rudzińska, she won the women's world championship speed climbing bronze medal at the
2014 IFSC Climbing World Championships in
Gijón, Spain. She became the women's speed climbing world champion in September 2018 at the
2018 IFSC Climbing World Championships in
Innsbruck. Mirosław defended her world title and won her second women's competition speed climbing world gold medal a year later, at the
2019 IFSC Climbing World Championships in
Hachioji, Japan. During the same competition Mirosław reached the finals of the combined event qualifying her for the
2020 Olympics. She won two stages of the
IFSC Climbing World Cup in speed climbing, at
Chamonix in July 2018 and at
Wujiang in May 2019. Previously she finished in second place at Chamonix in July 2016, and third at Wujiang in October 2016. She improved her time in the finals on 6 August, setting a new women's
world record with 6.84 s. She finished in 4th place in the overall standings and did not win a medal. On 27 May 2022, during the second qualification round of the IFSC Climbing World Cup in Salt Lake City, Utah, USA, she broke her own previous speed-climbing world record with a time of 6.53 seconds. On 28 April 2023, during the IFSC Climbing World Cup in Seoul, South Korea, she broke her world records four times. The final world record she set that evening, in the finals, was 6.25 seconds. On 15 September 2023, Mirosław qualified for the
2024 Olympics in the European Qualifier. In the qualification round, she also set a new world record of 6.24 seconds. On 5 August 2024, during the qualification heats at the 2024 Olympics, Mirosław broke her world records twice, and set a new world record of 6.06 seconds. She defeated Spain's
Leslie Romero Pérez, Poland's
Aleksandra Kałucka and China's
Deng Lijuan in the knock out stage on her way to Olympic gold medal. As a recognition of her achievements, a
mural depicting Mirosław beating the world record was created by artist Michał Ćwiek in her hometown of Lublin. == Personal life ==