La Chaux-de-Fonds is a Swiss city in the canton of Neuchâtel. It is located in the Jura mountains at an altitude of 1000 m, a few kilometres south of the French border. After Geneva, Lausanne and Fribourg it is the fifth largest city in the Romandie, the French-speaking part of the country, with a population of 36,915.
Isaac Makwala is a Botswana sprinter who specializes in the 400 metres.
Agnė Šerkšnienė (Orlauskaitė) is a Lithuanian sprinter, Olympian, 14 times National Champion who specializes in the 400m. In July 2018 at La Chaux-de-Fonds she ran her personal best and a national record of 50.99. She has also set national records in 200m 22.99 at Zofingen in July 2018 and 400m indoors 52.12 at Magglingen in February 2021. In total she improved national record 9 times. She took part in 2020 Olympic Games.
Anna Kiełbasińska is a Polish sprinter who competed occasionally also in hurdling events. She won the bronze medal in the 400 metres as well as silver medals in the 4 x 100 m and 4 x 400 m relays at the 2022 European Championships. Kiełbasińska earned bronze for the 400 m at the 2023 European Indoor Championships. She won several major medals as part of Polish 4 x 400 m relay teams and also individual medals at European Under-20 and U23 Championships.
Alex Wilson is a Swiss sprinter of Jamaican origin. He finished third at the 2018 European Championships in the 200 metres event.
Léa Sprunger is a former Swiss track and field athlete. Originally a heptathlete like her older sister Ellen, she began concentrating on the 200 metres and 400 metres in 2011, and then on the 400 metres hurdles from 2015. Her best times in the 400m and 400m hurdles of 50.52 s (2018) and 54.06 s (2019) are the Swiss records. She finished fifth in the 400m hurdles final at the 2017 World Championships, and went on to win the gold medal in the 400m hurdles at the 2018 European Championships.
Riste Pandev is a Macedonian sprinter. He competed in the 100 metres event at the 2013 World Championships in Athletics. He holds the Macedonian record in the 100m with time of 10.61 placed in Pravets, Bulgaria on 15 June 2013. On 6 July 2014 he broke the Macedonian record on 200m with the time of 21.65 posted in La Chaux-de-Fonds, Switzerland.
Sydney Sido Siame is a Zambian sprinter. He competed in the 200 metres at the 2015 World Championships in Beijing without advancing from the first round. In addition, he won a gold medal at the 2014 Summer Youth Olympics.
Kevin Widmer is a retired Swiss athlete who competed in sprinting events. He represented his country at the 1996 Summer Olympics, as well as three outdoor and two indoor World Championships. Widmer is of Vietnamese descent and currently works as an athletics coach.
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.
Davide Re is an Italian male 400 metre runner, two times gold medallist at the 2018 Mediterranean Games. He competed at the 2020 Summer Olympics, in 400 m.
Roy Schmidt is a German sprinter. He represented his country in the 4 × 100 metres relay at the 2017 World Championships without qualifying for the final. In addition, he won a bronze medal in the same event at the 2016 European Championships.
Jason Joseph is a Swiss athlete specialising in the sprint hurdles. He won a gold medal in the 60 metres hurdles at the 2023 European Indoor Championships. He has been the national champion in the 110 metres hurdles ever since 2019, earning the title consecutively five times in a row, and holds national records in both events. He also reached the semi-finals of the 2020 Olympics.
Line Kloster is a Norwegian athlete specialising in the 400 metres and 400 metres hurdles. She reached the semifinal of the 2013 European Indoor Championships where she set a new national indoor record of 52.78 narrowly missing the final.
Taymir Burnet is a Dutch sprinter. He earned two bronze medals as part of Dutch men's 4 × 100 and 4 × 400 metres relays.
Marije van Hunenstijn is a Dutch sprinter. She won a silver medal in the 4 × 100 metres relay at the 2018 European Championships.
Tony van Diepen is a Dutch track and field athlete competing in the 400 and 800 metres. He won the bronze medal in the 400 m at the 2019 European Indoor Championships and silver at the 2021 European Indoor Championships. Van Diepen earned five medals with Dutch 4 × 400 m relays, either men's or mixed, at major championships, including silver for the men's relay at the 2020 Tokyo Olympics.
Diana Vaisman is a Belarusian-born Israeli track and field athlete and sprinter. She holds the Israeli national record in the 100 metre sprint.
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.
Lithuania 
