Rosalie’s swimming journey has been marked by both challenges and successes. At the age of 12 or 13, during the height of the COVID-19 pandemic, training opportunities were limited, causing a temporary setback in her development. However, she set her sights on competing at the European Youth Olympic Festival (EYOF) when she was 14 but narrowly missed the qualifying time by just 0.07 seconds. Rosalie persevered, and a year later, she not only qualified for the EYOF but also broke two Dutch records in her favorite events and won two bronze medals. During the 2024 Dutch National Championships in Amersfoort, she achieved the qualifying time for the European Junior Championships (EJK) in Vilnius in the 100m freestyle. At the EJK, she represented her country in multiple relays and her individual event.

Rosalie excels in sprinting, a discipline she finds both challenging and enjoyable. She trains five times a week, totaling 10 hours of practice Her training is often focused on improving her sprinting abilities, especially as she approaches the taper phase of her preparation. Strength training also plays a significant role in enhancing her performance. Despite her achievements, Rosalie is committed to continuous improvement. She is working on refining certain aspects of her technique, such as her hand entry and breathing, and is also focused on building her endurance to improve her performance in longer events like the 200m freestyle. 

50m freestyle long course: 26.05

50m freestyle short course: 25.15

100m freestyle long course: 56.33

100m freestyle short course: 55.00

100m butterfly long course: 1:03.31

100m butterfly short course: 1:02.23

Rosalie will be graduating high school in June 2025 at the highest level of education in the Netherlands. She is looking forward to continuing her swimming career at the top level in the United States and aims to keep pushing her limits. Her goal is to compete on the international stage, striving for excellence in every race. Rosalie is looking to join a college Swimming program for the Fall of 2025. 

If you are interested in learning more about Rosalie, please reach out to pedro@slamstox.com.