Dylan Borlée is a Belgian sprinter who competes in the 400 metres. He is a member of the Borlée family.
Nadine Visser is a Dutch track and field athlete who competed in the combined events until 2017 and specialises in short hurdling since 2018.
Julien Watrin is a Belgian sprinter specialising in the 400 metres. In 2023, he won his first individual major senior medal, with silver at the European Indoor Championships. Watrin earned several major medals with national men's 4 × 400 m relays, including bronzes at the 2019 and 2022 World Athletics Championships.
Yasmin Giger is a Swiss athlete specialising in the 400 metres hurdles. She won a gold medal at the 2017 European U20 Championships. Currently, she is the national champion in both the 400 metres and the 400 metres hurdles.
Christopher O'Donnell is an Irish track and field athlete competing in sprinting events. He was part of the Irish Mixed 4x400m team who won a gold medal at the European Athletics Championships in 2024. He represented Ireland at the 2020 Summer Olympics in the Mixed 4 × 400 m relay where he was part of the first ever Irish team to run in an Olympic final, and was also part of the team who reached the final of the 2022 and 2023 World Championships. He is the current Irish U20 record holder in the 400m, his personal best of 45.26 seconds sits joint-2nd on the Irish all-time list and he is a 5-time National 400m champion.
The Swiss Indoor Athletics Championships is an annual indoor track and field competition organised by the Swiss Athletics Federation, which serves as the national championship for the sport in Switzerland. Typically held over two to three days in February during the Swiss winter, it was first added to the national calendar in 1982, supplementing the main outdoor Swiss Athletics Championships held in the summer since 1906.
Femke Bol is a Dutch track and field athlete who competes in hurdling and sprinting. She specialises in the 400 metres hurdles, where she is the 2023 World Champion, and in the 400 metres, where she is the 2024 World Indoor Champion and the short track world record holder. In the 4 × 400 metres relay, she is the 2023 World Champion and the 2024 World Indoor Champion with the Dutch women's team and the 2024 Olympic Champion with the Dutch mixed team.
Sasha Zhoya is an Australian-born French athlete who represents France in international track and field competition, specialized in hurdling events. Born in Australia, and of French and Zimbabwean descent, he represents France internationally.
Zoë Frederique Sedney is a Dutch athlete who competes in the hurdles, 100 metres, 200 metres, 400 metres and 4 × 100 metres relay. Sedney won two gold medals at the 2017 European Youth Summer Olympic Festival. As a senior in 2021, she competed in both the European Indoor Championships and the Summer Olympics. In 2022, she became part of the 4 × 100 metres Dutch relay team, competing together with her older sister Naomi Sedney.
Ricky Petrucciani is a Swiss sprinter specialising in the 400 metres. He won a gold medal at the 2021 European U23 Championships and a silver medal at the 2022 European Championships in the 400m category. He also reached the semifinals of the 2020 Olympics.
Alexander Doom is a Belgian sprinter specializing in the 400 metres. In 2024, he became the first male athlete to win the individual 400 metres and 4×400 metres relay at the same World Athletics Indoor Championships He has won several medals in international competitions with the Belgian 4 × 400 metres relay team and holds a personal best of 44.15 over the 400 metres.
Ditaji Kambundji is a Swiss athlete specialising in the sprint hurdles. She won the bronze medal in the 100 metres hurdles at the 2022 European Championships and bronze for the 60 metres hurdles at the 2023 European Indoor Championships.
William Reais is a Swiss sprinter competing primarily in the 200 metres. He competed in the 200 metres at the 2020 Summer Olympics. He also holds the Swiss national indoor record for the same event.
Trevor Bassitt is an American track and field athlete.
Israel Olatunde is an Irish professional track and field athlete specializing in the sprints. He competed at the 2022 World Athletics Indoor Championships, and reached the final of the 100 metres at the 2022 European Athletics Championships, the first Irishman ever to do so, and where he finished sixth in an Irish record time. He later broke the national record in the 60 metres in 2023.
Géraldine Frey is a Swiss track and field athlete. In 2022, she became the Swiss national champion over 200 metres.
Yemi Mary John is a British track and field athlete. She won the gold medal in the 400 metres at the 2022 World Athletics Under-20 Championships.
Audrey Werro is a Swiss track and field athlete. She won the silver medal in the 800 metres at the 2022 World Under-20 Championships and gold medals at the 2021 European U20 Championships as well as the 2023 European U20 Championships.
Lionel Spitz is a Swiss sprinter who specialises in the 400 metres. He won a silver medal at the 2023 European U23 Championships. Shortly after, he set a new personal best of 45.25 at the Swiss Championships and also finished in first place at the event, securing his second national title.
Camille Séri is a French hurdler specializing in the 400 metres hurdles. She was the silver medalist in the 400 m hurdles at the 2022 Mediterranean Games, and she finished 9th at the 2023 World Athletics Championships in the 4 × 400 m relay.
