# 2024 World Athletics U20 Championships – Men's 400 metres hurdles

The men's 400 metres hurdles at the 2024 World Athletics U20 Championships was held at the Estadio Atlético de la VIDENA in Lima, Peru on 28, 30 and 31 August 2024.

## Records

U20 standing records prior to the 2024 World Athletics U20 Championships were as follows:
| Record | Athlete & Nationality | Mark | Location | Date |
| World U20 Record | Roshawn Clarke (JAM) | 47.34 | Budapest, Hungary | 21 August 2023 |
| Championship Record | Kerron Clement (USA) | 48.51 | Grosseto, Italy | 16 July 2004 |
| World U20 Leading | Njabulo Mbatha (RSA) | 49.57 | Pietermaritzburg, South Africa | 19 April 2024 |

## Results
### Heats

The first 3 athletes in each heat (Q) and the next 3 fastest (q) qualified to the semi-final.

#### Heat 1

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 9 | Michal Rada | Czech Republic | 52.26 | Q |
| 2 | 2 | Ramón Fuenzalida | Chile | 52.58 | Q |
| 3 | 6 | Paolo Bolognesi | Italy | 52.84 | Q |
| 4 | 7 | Murad Sirman | India | 52.85 | |
| 5 | 8 | Muh. Najmi | Malaysia | 53.47 | |
| 6 | 3 | Muqtada Ai-Hiaich | Iraq | 54.33 | |
| 7 | 4 | Colin Zumbühl | Switzerland | 54.42 | |
| – | 5 | Thomas Canivet | France | DNS | |

#### Heat 2

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 9 | Daniel Wright | Jamaica | 51.42 | Q |
| 2 | 3 | Jingwei Guo | China | 51.72 | Q |
| 3 | 6 | Mitja Zubin | Slovenia | 51.90 | Q |
| 4 | 8 | Akalanka Kuda Liyanage | Sri Lanka | 52.04 | q |
| 5 | 5 | Dorian Charles | Trinidad and Tobago | 53.65 | |
| 6 | 7 | Karthik Arumugam | India | 53.75 | |
| 7 | 2 | Mahamat Abdrahman | Qatar | 54.26 | |
| 8 | 4 | Evian Solorzano | Peru | 59.10 | PB |

#### Heat 3

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 7 | Kairi Gonda | Japan | 51.21 | Q |
| 2 | 6 | Sam Lunt | Great Britain | 51.87 | Q |
| 3 | 3 | Ali Alrumayh | Saudi Arabia | 52.43 | Q |
| 4 | 4 | David Davitt | Ireland | 52.51 | |
| 5 | 8 | Zakaria Sabir | Morocco | 52.56 | |
| 6 | 9 | Abbas Alkhawaf | Iraq | 53.46 | |
| 7 | 5 | Roineld Lara | Venezuela | 53.69 | |
| – | 2 | David Friederich | Luxembourg | DNS | |
* ↑ David Davitt did not originally qualify for the semi-finals however due to Vladimiros Andreadis opting to take no further part in the competition Davitt was placed in to Heat 2 of the semi-finals.

#### Heat 4

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 3 | Vance Nilsson | United States | 51.98 | Q |
| 2 | 7 | Fintan Dewhirst | Ireland | 52.39 | Q |
| 3 | 4 | Lucas De Almeida | Brazil | 52.76 | Q |
| 4 | 8 | Edio Mussacate | Mozambique | 53.15 | |
| 5 | 5 | Alexis Perroud | Switzerland | 53.74 | |
| – | 9 | Abdennour Bourmaki | Algeria | DNS | |
| – | 6 | Xinfeng Xu | China | DNS | |

#### Heat 5

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 4 | Antti Sainio | Finland | 51.19 | Q |
| 2 | 8 | Premier Wynn | United States | 51.89 | Q |
| 3 | 2 | Jose Eduardo Aguado | Mexico | 52.09 | Q |
| 4 | 6 | Cheyne West | Trinidad and Tobago | 52.18 | q, PB |
| 5 | 5 | Oussama Fagrach | Morocco | 52.67 | PB |
| 6 | 7 | Matthew Hunt | Australia | 52.84 | |
| 7 | 9 | Oseiwe Salami | Nigeria | 54.06 | |
| 8 | 3 | Ziad Bouhaddad | Algeria | 54.62 | |

#### Heat 6

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 9 | Njabulo Mbatha | South Africa | 51.42 | Q |
| 2 | 5 | Joel Von De Ahé | Denmark | 51.80 | Q, NU20R |
| 3 | 6 | Maximiliano Nuñez | Mexico | 52.09 | Q |
| 4 | 7 | Trevoy Smith | Jamaica | 52.15 | q |
| 5 | 3 | David Damian | Romania | 52.79 | |
| 6 | 8 | José David Mosquera | Colombia | 53.61 | |
| 7 | 4 | Mahamat Mahamo | Qatar | 54.44 | |

#### Heat 7

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 8 | Kyo Kikuta | Japan | 51.24 | Q |
| 2 | 3 | Joaquin Alonso | Spain | 52.47 | Q |
| 3 | 9 | Vladimiros Andreadis | Greece | 52.51 | Q |
| 4 | 7 | Naif Alsubaie | Saudi Arabia | 53.56 | |
| – | 5 | Jeong-hyun Kim | South Korea | DNF | |
| – | 4 | Ntiyiso Nkanyani | South Africa | DNF | |
| – | 6 | Giulio Vanarelli | Italy | DNF | |

### Semi-finals

The first 2 athletes in each heat (Q) and the next 2 fastest (q) qualified to the semi-final.

#### Heat 1

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 8 | Njabulo Mbatha | South Africa | 49.90 | Q |
| 2 | 6 | Sam Lunt | Great Britain | 50.00 | Q, NU20R |
| 3 | 5 | Kyo Kikuta | Japan | 51.04 | |
| 4 | 3 | Akalanka Kuda Liyanage | Sri Lanka | 51.45 | |
| 5 | 4 | Mitja Zubin | Slovenia | 52.55 | |
| 6 | 2 | Paolo Bolognesi | Italy | 53.92 | |
| 7 | 9 | Maximiliano Nuñez | Mexico | 57.96 | |
| – | 7 | Joel Von De Ahé | Denmark | DNS | |

#### Heat 2

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 6 | Antti Sainio | Finland | 49.36 (.351) | Q, WU20L |
| 2 | 7 | Michal Rada | Czech Republic | 49.36 (.351) | Q, WU20L |
| 3 | 8 | Vance Nilsson | United States | 49.82 | q |
| 4 | 9 | Joaquin Alonso | Spain | 50.22 | q, NU20R |
| 5 | 5 | Fintan Dewhirst | Ireland | 51.65 | |
| 6 | 3 | David Davitt | Ireland | 51.93 | |
| 7 | 4 | Ali Alrumayh | Saudi Arabia | 52.25 | PB |
| 8 | 2 | Trevoy Smith | Jamaica | 54.24 | |

#### Heat 3

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 5 | Daniel Wright | Jamaica | 51.11 | Q |
| 2 | 9 | Ramón Fuenzalida | Chile | 51.33 | Q, PB |
| 3 | 8 | Kairi Gonda | Japan | 51.80 | |
| 4 | 4 | Jose Eduardo Aguado | Mexico | 52.27 | |
| 5 | 2 | Lucas De Almeida | Brazil | 52.67 | PB |
| 6 | 7 | Premier Wynn | United States | 52.76 | |
| 7 | 3 | Cheyne West | Trinidad and Tobago | 53.09 | |
| 8 | 6 | Jingwei Guo | China | 1:03.89 | |

### Final

| Rank | Lane | Athlete | Nation | Time | Notes |
| | 2 | Vance Nilsson | United States | 49.26 | WU20L |
| | 8 | Michal Rada | Czech Republic | 49.30 | NU20R |
| | 6 | Antti Sainio | Finland | 49.61 | |
| 4 | 5 | Njabulo Mbatha | South Africa | 49.68 | |
| 5 | 9 | Sam Lunt | Great Britain | 50.29 | |
| 6 | 3 | Joaquin Alonso | Spain | 51.00 | |
| 7 | 7 | Daniel Wright | Jamaica | 51.61 | |
| – | 4 | Ramón Fuenzalida | Chile | DQ | TR22.6.1 |