The World Athletics U20 Championships is a biennial world championships for the sport of athletics organised by the World Athletics, contested by athletes in the under-20 athletics age category (19 years old or younger on 31 December in the year of the competition.
Konstanze "Koko" Klosterhalfen is a German middle- and long-distance runner. She is the 2019 World Championship bronze medallist and 2022 European champion in the 5000 metres, becoming the first German medalist of the event at the World Athletics Championships and the first German winner of the event at the European Athletics Championships. At the European Indoor Championships, Klosterhalfen won silver medals for the 1500 metres in 2017 and the 3000 metres in 2019 and 2023. She took four individual medals at the European Cross Country Championships. In February 2020, she set a European indoor record in the 5000 m with 14:30.79, the fourth fastest time ever.
Bence Barnabás Venyercsán is a Hungarian race walker. He finished 45th in the 50 km event at the 2016 Summer Olympics and 20th in the men's 50 kilometres walk at the 2020 Summer Olympics.
Klavdiya Afanasyeva is a Russian racewalker. She won gold medals in the European U20 and U23 championships in the 10,000 m race walk and 20 km race walk respectively. Though she has never tested positive for an anti-doping violation, in May 2018 she was suspended from international competition due to participating in a training camp including banned coach Viktor Chegin.
Ayşe Tekdal is a Turkish female race walker specialising in the 5000 m, 10,000 m and 20 km events. She is a native of Diyarbakır, southeastern Turkey. She competes for Kayapınar Belediyespor in her hometown.
Saskia Feige is a German racewalker. She competed in the women's 20 kilometres walk event at the 2019 World Athletics Championships held in Doha, Qatar. She finished in 11th place. She also competed in the women's 20 kilometres walk at the 2020 Summer Olympics held in Tokyo, Japan.
Katie Hayward is an Australian racewalker. She represented Australia at the 2019 World Athletics Championships held in Doha, Qatar and also at the 2020 Summer Olympics held in Tokyo, Japan. At the 2020 Olympics, she came 37th in the women's 20 km walk final with a time of 1:38.11, just on 9 minutes behind the eventual winner Antonella Palmisano.
Katarzyna Zdziebło is a Polish racewalker. She won silver medals in the women's 20 kilometres walk and 35 kilometres walk at the 2022 World Athletics Championships. Zdziebło earned also a silver in the 20 km walk at the 2022 European Championships.
Noelia Vargas Mena is a Costa Rican racewalker. She competed in the women's 20 kilometres walk at the 2020 Summer Olympics held in Tokyo, Japan. In 2019, she competed in the women's 20 kilometres walk event at the 2019 World Athletics Championships held in Doha, Qatar. She finished in 36th place with a time of 1:46:30. She also competed in the same event at the 2022 World Athletics Championships held in Eugene, Oregon, United States.
Joo Hyun-myeong is a South Korean racewalker. In 2018, he won the bronze medal in the men's 50 kilometres walk at the 2018 Asian Games held in Jakarta, Indonesia.
Mathilde Sénéchal is a French long-distance runner. In 2019, she competed in the senior women's race at the 2019 IAAF World Cross Country Championships held in Aarhus, Denmark. She finished in 60th place.
Ma Zhenxia is a Chinese racewalker. She won the gold medal in the girls' 5 kilometre walk at the 2014 Summer Youth Olympics held in Nanjing, China.
Adrian Garcea is a Romanian long-distance runner.
Gabriel Bordier is a French racewalker. He competed in the men's 20 kilometres walk at the 2019 World Athletics Championships held in Doha, Qatar. He finished in 24th place.
Eduard Ihorevych Zabuzhenko is a Ukrainian racewalker.
Jonathan Hilbert is a German racewalker. He won the silver medal in the men's 50 kilometres walk at the 2020 Summer Olympics held in Tokyo, Japan. In 2019, he competed in the men's 50 kilometres walk at the World Athletics Championships held in Doha, Qatar. He finished in 23rd place.
Nathaniel Seiler is a Filipino-German racewalker. In 2019, he competed in the men's 50 kilometres walk at the 2019 World Athletics Championships held in Doha, Qatar. He did not finish his race.
Cameron Corbishley is a British race walker. He specialises in the 20 km and 50 km walks.
Nina Siarheyeuna Savina is a Belarusian long-distance runner.
