# 2022 World Athletics U20 Championships – Men's 400 metres

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.

## Records

U20 standing records prior to the 2022 World Athletics U20 Championships were as follows:
| Record | Athlete & Nationality | Mark | Location | Date |
| World U20 Record | Steve Lewis (USA) | 43.87 | Seoul, South Korea | 28 September 1988 |
| Championship Record | Anthony Pesela (BOT) | 44.58 | Nairobi, Kenya | 21 August 2021 |
| World U20 Leading | Steven McElroy (USA) | 44.93 | Eugene, United States | 25 June 2022 |

## Results
### Round 1

Round 1 took place on 2 August, with the 35 athletes involved being split into 5 heats, each of 7 athletes. The first 4 athletes in each heat ( Q ) and the next 4 fastest ( q ) qualified to the semi-final. The overall results were as follows:
| Rank | Heat | Name | Nationality | Time | Note |
| 1 | 2 | Lythe Pillay | South Africa | 46.02 | Q, SB |
| 2 | 2 | Yusuf Ali Abbas | Bahrain | 46.21 | Q |
| 3 | 2 | Delano Kennedy | Jamaica | 46.24 | Q, PB |
| 4 | 4 | Steven McElroy | United States | 46.38 | Q |
| 5 | 3 | Tadeáš Plaček | Czech Republic | 46.56 | Q, PB |
| 6 | 1 | Ángel González | Spain | 46.65 | Q |
| 7 | 3 | Shaemar Uter | Jamaica | 46.66 | Q |
| 8 | 5 | Masataka Tomoda | Japan | 46.68 | Q |
| 9 | 2 | Elkanah Chemelili | Kenya | 46.69 | Q |
| 10 | 2 | Martin Kouyoumdjian | Chile | 46.75 | q, PB |
| 11 | 5 | Ashton Schwartzman | United States | 46.76 | Q |
| 12 | 4 | Christopher Morales-Williams | Canada | 46.81 | Q |
| 13 | 4 | Andreas Grimerud | Norway | 46.85 | Q |
| 14 | 3 | Markel Fernández | Spain | 46.87 | Q |
| 15 | 1 | Busang Kebinatshipi | Botswana | 46.89 | Q |
| 16 | 4 | Tjaart van der Walt | South Africa | 47.00 | Q |
| 17 | 1 | Vinivius Moura | Brazil | 47.02 | Q |
| 18 | 5 | Joshua Atkinson | Thailand | 47.03 | Q |
| 19 | 3 | Shion Arita | Japan | 47.10 [.092] | Q |
| 20 | 1 | Tyler Floyd | Canada | 47.10 [.094] | Q |
| 21 | 5 | Marko Orešković | Croatia | 47.12 | Q, PB |
| 22 | 2 | Cooper Sherman | Australia | 47.16 | q, PB |
| 23 | 5 | Lukas Krappe | Germany | 47.25 | q, PB |
| 24 | 1 | Lukas Sutkus | Lithuania | 47.39 | q, PB |
| 25 | 5 | Denis Toma | Romania | 47.64 | |
| 26 | 1 | Bamidele Ajayi | Nigeria | 47.67 | |
| 27 | 4 | Michal Haidelmeier | Czech Republic | 47.70 | |
| 28 | 1 | Remus Niculita | Romania | 47.80 | |
| 29 | 3 | Emmanuel Rwotomiya | Uganda | 47.86 | |
| 30 | 5 | Luca Sito | Italy | 48.03 | |
| 31 | 2 | Amal Glasgow | Saint Vincent and the Grenadines | 48.26 | |
| 32 | 3 | Lex Revell-Lewis | New Zealand | 48.66 | |
| 33 | 4 | Tumiso Gabonamong | Botswana | 48.72 | |
| 34 | 3 | João Ribeiro Barros | Brazil | 48.73 | |
| | 4 | Joshua Mpanza | Zambia | DQ | DQ |

### Semi-final

The semi-final took place on 3 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:
| Rank | Heat | Name | Nationality | Time | Note |
| 1 | 2 | Delano Kennedy | Jamaica | 45.49 | Q, PB |
| 2 | 3 | Lythe Pillay | South Africa | 45.61 | Q, SB |
| 3 | 1 | Steven McElroy | United States | 45.67 | Q |
| 4 | 2 | Busang Kebinatshipi | Botswana | 45.91 | Q |
| 5 | 1 | Shaemar Uter | Jamaica | 45.96 | Q, PB |
| 6 | 3 | Joshua Atkinson | Thailand | 46.13 | Q, NU20R |
| 7 | 1 | Yusuf Ali Abbas | Bahrain | 46.21 | q |
| 8 | 2 | Tyler Floyd | Canada | 46.22 | q, PB |
| 9 | 2 | Christopher Morales-Williams | Canada | 46.27 | PB |
| 10 | 2 | Ashton Schwartzman | United States | 46.50 | |
| 11 | 3 | Andreas Grimerud | Norway | 46.54 | |
| 12 | 3 | Masataka Tomoda | Japan | 46.62 | |
| 13 | 2 | Tadeáš Plaček | Czech Republic | 46.63 | |
| 14 | 1 | Martin Kouyoumdjian | Chile | 46.69 | PB |
| 15 | 1 | Ángel González | Spain | 46.81 | |
| 16 | 1 | Markel Fernández | Spain | 46.88 | |
| 17 | 3 | Cooper Sherman | Australia | 46.94 | PB |
| 18 | 2 | Vinicius Moura | Brazil | 47.00 | |
| 19 | 1 | Marko Orešković | Croatia | 47.51 | |
| 20 | 3 | Lukas Sutkus | Lithuania | 47.55 | |
| 21 | 3 | Tjaart van der Walt | South Africa | 47.69 | |
| 22 | 3 | Shion Arita | Japan | 47.97 | |
| 23 | 1 | Elkanah Chemelili | Kenya | 48.03 | |
| 24 | 2 | Lukas Krappe | Germany | 48.10 | |

### Final

The final was started at 18:00 on 4 August. The results were as follows:
| Rank | Lane | Name | Nationality | Time | Note |
| | 5 | Lythe Pillay | South Africa | 45.28 | PB |
| | 4 | Steven McElroy | United States | 45.65 | |
| | 1 | Yusuf Ali Abbas | Bahrain | 45.80 | PB |
| 4 | 2 | Tyler Floyd | Canada | 46.01 | PB |
| 5 | 7 | Joshua Atkinson | Thailand | 46.31 | |
| 6 | 8 | Shaemar Uter | Jamaica | 46.36 | |
| | 3 | Busang Kebinatshipi | Botswana | DQ | DQ |
| | 6 | Delano Kennedy | Jamaica | DQ | DQ |