# 2024 World Athletics U20 Championships – Women's 400 metres

The women's 400 metres at the 2024 World Athletics U20 Championships was held at the Estadio Atlético de la VIDENA in Lima, Peru on 28 and 29 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 | Grit Breuer (GER) | 49.42 | Tokyo, Japan | 27 August 1991 |
| Championship Record | Ashley Spencer (USA) | 50.50 | Barcelona, Spain | 13 July 2012 |
| World U20 Leading | JaMeesia Ford (USA) | 51.24 | Eugene, United States | 22 June 2024 |

## Results
### Heats

The first 3 athletes in each heat (Q) and the next 6 fastest (q) qualified to the semi-finals.

#### Heat 1

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 9 | Charlotte Henrich | United Kingdom | 53.07 | Q |
| 2 | 5 | Johanna Martin | Germany | 53.22 | Q |
| 3 | 8 | Zita Szentgyörgyi | Hungary | 53.63 | Q |
| 4 | 6 | Madeleine Waddell | Australia | 54.02 | q |
| 5 | 3 | Camila Rodríguez | Dominican Republic | 55.24 | |
| 6 | 4 | Kenya Maturana | Mexico | 55.45 | |
| 7 | 2 | T'anna Liburd | Saint Kitts and Nevis | 55.91 | |
| 8 | 7 | Jithma Wijethunga | Sri Lanka | 56.16 | |

#### Heat 2

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 1 | Dianna Proctor | Canada | 52.73 | Q, PB |
| 2 | 4 | Lurdes Gloria Manuel | Czech Republic | 52.76 | Q |
| 3 | 2 | Dominika Duraj | Poland | 53.16 | Q |
| 4 | 3 | Julia Ribeiro | Brazil | 53.87 | q |
| 5 | 8 | Borghild Oline Holstad | Norway | 54.48 | q |
| 6 | 5 | Narissa McPherson | Guyana | 54.67 | |
| 7 | 9 | Elena Cambiolo | Italy | 55.61 | |
| 8 | 7 | Chiara Risi | Switzerland | 56.11 | |
| 9 | 6 | Lina Keder | Slovenia | 56.54 | |

#### Heat 3

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 6 | Ella Onojuvwevwo | Nigeria | 52.19 | Q |
| 2 | 4 | Paola Loboa | Colombia | 52.81 | Q, PB |
| 3 | 9 | Jemma Pollard | Australia | 53.45 | Q |
| 4 | 3 | Line Safaa | Norway | 53.64 | q, SB |
| 5 | 1 | Jonbibi Hukmova | Uzbekistan | 54.12 | q, PB |
| 6 | 8 | Abrina Wright | Jamaica | 54.63 | |
| 7 | 7 | Angelique Abberley | Mauritius | 54.66 | |
| 8 | 2 | Malena Galvan | Argentina | 53.37 | =PB |
| 9 | 5 | Neeru Pahtak | India | 55.58 | |

#### Heat 4

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 8 | Zaya Akins | United States | 52.69 | Q |
| 2 | 5 | Kara Dacosta | United Kingdom | 53.59 | Q |
| 3 | 3 | Maria Denisa Capotă | Romania | 54.03 | Q |
| 4 | 6 | Precious Molepo | South Africa | 54.11 | q |
| 5 | 1 | Lenka Gymerská | Slovakia | 55.01 | |
| 6 | 2 | Ana Prieto | Spain | 55.75 | |
| 7 | 4 | Paola Mireles | Mexico | 56.58 | |
| 8 | 9 | Grazielly Sena | Brazil | 56.75 | |
| 9 | 7 | Giuliana Oroná | Uruguay | 58.42 | |

#### Heat 5

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 5 | Elisa Valensin | Italy | 53.82 | Q |
| 2 | 7 | Karolina Zbičajnik | Slovenia | 53.86 | Q |
| 3 | 4 | Amelia Rowe | Australia | 54.19 | Q |
| 4 | 3 | Tianna Springer | Guyana | 54.49 | |
| 5 | 1 | Michelle Liem | Switzerland | 55.42 | |
| 6 | 8 | Eir Hlesdottir | Iceland | 55.48 | |
| 7 | 6 | Chrysi Fountoulaki | Greece | 55.54 | |
| 8 | 2 | Tyhra Charles | Saint Vincent and the Grenadines | 55.87 | |
| 9 | 9 | Salamatou Halidou Hassane | Niger | DNS | |

#### Heat 6

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 9 | Michaela Mouton | United States | 53.29 | Q |
| 2 | 6 | Nahomy Castro | Colombia | 53.37 | Q, SB |
| 3 | 4 | Shanque Williams | Jamaica | 54.22 | Q |
| 4 | 7 | Chane Vermeulen | South Africa | 54.49 | |
| 5 | 3 | Kiara Webb | Denmark | 54.60 | |
| 6 | 5 | Laavinia Jaiganth | Singapore | 54.66 | NU20R |
| 7 | 2 | Stefania Balint | Romania | 55.05 | |
| 8 | 8 | Kristina Petkova | Bulgaria | 55.09 | |
| 9 | 1 | Anuskha Kumbhar | India | 56.52 | |

### Semi-finals

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

#### Heat 1

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 6 | Zaya Akins | United States | 52.11 | Q |
| 2 | 8 | Elisa Valensin | Italy | 52.23 | Q, NU20R |
| 3 | 5 | Paola Loboa | Colombia | 53.17 | |
| 4 | 9 | Jemma Pollard | Australia | 53.49 | |
| 5 | 3 | Borghild Oline Holstad | Norway | 53.99 | PB |
| 6 | 7 | Kara Dacosta | United Kingdom | 54.24 | |
| 7 | 4 | Shanque Williams | Jamaica | 54.57 | |
| 8 | 2 | Julia Ribeiro | Brazil | 55.12 | |

#### Heat 2

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 7 | Dianna Proctor | Canada | 52.59 | Q, PB |
| 2 | 8 | Johanna Martin | Germany | 52.69 | Q |
| 3 | 6 | Charlotte Henrich | United Kingdom | 52.74 | q |
| 4 | 2 | Madeleine Waddell | Australia | 53.50 | PB |
| 5 | 5 | Nahomy Castro | Colombia | 53.75 | |
| 6 | 9 | Zita Szentgyörgyi | Hungary | 53.94 | |
| 7 | 4 | Maria Denisa Capotă | Romania | 53.96 | PB |
| 8 | 3 | Precious Molepo | South Africa | 54.55 | |

#### Heat 3

| Rank | Lane | Athlete | Nation | Time | Notes |
| 1 | 8 | Lurdes Gloria Manuel | Czech Republic | 51.91 | Q |
| 2 | 5 | Ella Onojuvwevwo | Nigeria | 51.99 | Q |
| 3 | 7 | Michaela Mouton | United States | 52.72 | q |
| 4 | 6 | Karolina Zbičajnik | Slovenia | 53.19 | SB |
| 5 | 9 | Dominika Duraj | Czech Republic | 53.35 | |
| 6 | 4 | Amelia Rowe | Australia | 53.47 | |
| 7 | 3 | Line Safaa | Norway | 53.99 | |
| 8 | 2 | Jonbibi Hukmova | Uzbekistan | 54.87 | |

### Final

| Rank | Lane | Athlete | Nation | Time | Notes |
| | 5 | Lurdes Gloria Manuel | Czech Republic | 51.29 | |
| | 8 | Dianna Proctor | Canada | 51.98 | PB |
| | 7 | Zaya Akins | United States | 52.00 | |
| 4 | 4 | Johanna Martin | Germany | 52.49 | PB |
| 5 | 6 | Ella Onojuvwevwo | Nigeria | 52.61 | |
| 6 | 9 | Elisa Valensin | Italy | 52.69 | |
| 7 | 3 | Charlotte Henrich | United Kingdom | 52.71 | |
| 8 | 2 | Michaela Mouton | United States | 53.09 | |