2022 World Athletics U20 Championships – Men's 100 metres

The men's 100 metres at the 2022 World Athletics U20 Championships was held at the Estadio Olímpico Pascual Guerrero in Cali, Colombia on 1 and 2 August 2022.

Originally, 78 athletes from 51 countries entered to the competition, however, only 63 of them participated.

Records
U20 standing records prior to the 2022 World Athletics U20 Championships were as follows: * Mark pending ratification

Round 1
Round 1 took place on 1 August, with the 63 athletes involved being split into 8 heats, 7 heats of 8 and 1 of 7 athletes. The first 2 athletes in each heat ( Q ) and the next 8 fastest ( q ) qualified to the semi-final. The overall results were as follows:

Wind: Heat 1: +0.2 m/s, Heat 2: -1.2 m/s, Heat 3: -0.6 m/s, Heat 4: +1.7 m/s, Heat 5: -1.2 m/s, Heat 6: -0.9 m/s, Heat 7: -2.9 m/s, Heat 8: +0.8 m/s

Semi-final
The semi-final took place on 2 August, with the 24 athletes involved being split into 3 heats of 8 athletes each. The first 2 athletes in each heat ( Q ) and the next 2 fastest ( q ) qualified to the final. The overall results were as follows:

Wind: Heat 1: +0.6 m/s, Heat 2: +0.7 m/s, Heat 3: -0.4 m/s

Final
The final was started at 17:59 on 2 August. The results were as follows:

Wind: +0.8 m/s