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.
The Mixed 4 × 400 metres relay at the 2021 IAAF World U20 Championships was held at the Kasarani Stadium on 18 August.
The men's 800 metres at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 19, 21 and 22 August.
The women's 400 metres hurdles at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 19 and 22 August.
The men's 400 metres hurdles at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 19, 21 and 22 August.
The women's 800 metres at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium from 19 to 21 August.
The women's 100 metres at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 18 and 19 August.
The women's triple jump at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 19 and 20 August.
The men's 1500 metres at the 2021 World Athletics U20 Championships will be held at the Kasarani Stadium on 19 and 21 August.
The women's 200 metres at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 20 and 21 August.
The women's 100 metres hurdles at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 20 and 21 August.
The men's 400 metres at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium 18 and 21 August.
The women's long jump at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 20 and 22 August.
The men's 4 × 400 metres relay at the 2021 World Athletics U20 Championships was held at the Kasarani Stadium on 21 and 22 August.
The men's 400 metres at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 2, 3 and 4 August 2022.
The men's 400 metres hurdles at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 3, 4 and 5 August 2022.
The women's 400 metres at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 2, 3 and 4 August 2022.
The women's 400 metres hurdles at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 2, 3 and 4 August 2022.
The women's 4 × 400 metres relay at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 5 and 6 August 2022.
The mixed 4 × 400 metres relay at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 1 and 2 August 2022.
