Wennemars won the
2022 World Junior Speed Skating Championships at the Eisschnelllaufbahn
Innsbruck in Austria. He made his
ISU Speed Skating World Cup debut in November 2022 at the
Sørmarka Arena in
Stavanger, Norway where he finished seventh in the 500 m in Division B, resulting in a promotion to Division A. At the second World Cup event, held at the
Thialf in
Heerenveen, he finished in second place in Division A behind
Ning Zhongyan in a personal record of 1:08.08. At the
2025 World Single Distances Speed Skating Championships he won the 1000 m. In February 2026, Wennemars represented the Netherlands at the
2026 Winter Olympics in the
500 metres,
1000 metres and
1500 metres events. His 1000 m race against
Lian Ziwen took a dramatic turn when Wennemars was hindered by his opponent as the former was preparing to cross into the inside track. Wennemars was offered a chance to reskate the 1000 m thirty minutes later but was unable to improve his time, finishing in fifth place. ==Personal records==