# Athletics at the 2010 Summer Youth Olympics – Girls' 400 metres

The girls' 400 metres event at the 2010 Youth Olympic Games was held on 17–21 August 2010 in Bishan Stadium.

## Schedule

| Date | Time | Round |
| 17 August 2010 | 11:15 | Heats |
| 21 August 2010 | 20:05 | Final |

## Results
### Heats

| Rank | Heat | Lane | Athlete | Time | Notes | Q |
| 1 | 4 | 3 | Bukola Abogunloko (NGR) | 53.06 | | FA |
| 2 | 1 | 4 | Robin Reynolds (USA) | 53.21 | SB | FA |
| 3 | 2 | 3 | Bianca Răzor (ROU) | 53.89 | | FA |
| 4 | 1 | 3 | Rashan Brown (BAH) | 54.09 | | FA |
| 5 | 3 | 5 | Katherine Reid (CAN) | 54.54 | | FA |
| 6 | 3 | 6 | Sonja Mosler (GER) | 54.86 | | FA |
| 7 | 2 | 6 | Izelle Neuhoff (RSA) | 55.01 | | FA |
| 8 | 2 | 5 | Olivia James (JAM) | 55.05 | | FA |
| 9 | 4 | 4 | Romana Tea Kirinic (CRO) | 55.08 | | FB |
| 10 | 4 | 6 | Victoria Ohuruogu (GBR) | 55.56 | | FB |
| 11 | 4 | 2 | Frederique Hansen (LUX) | 56.34 | | FB |
| 12 | 3 | 4 | Katarina Ilic (SRB) | 56.41 | | FB |
| 13 | 1 | 6 | Yaneth Largacha (COL) | 57.44 | | FB |
| 14 | 3 | 3 | Kemesha Spann (TRI) | 57.57 | | FB |
| 15 | 4 | 5 | Tsiatengy Razafindrakoto (MAD) | 57.94 | | FB |
| 16 | 2 | 4 | Elina Mikhina (KAZ) | 58.76 | | FC |
| 17 | 2 | 8 | Tabique Lockhart (DMA) | 58.76 | | FC |
| 18 | 1 | 5 | Nickhelia Eudora Atida John (GRN) | 59.97 | | FC |
| 19 | 3 | 8 | Mariama Kadijatu Conteh (SLE) | 1:00.26 | | FC |
| 20 | 2 | 2 | Loth Toni (BEN) | 1:01.89 | | FC |
| 21 | 3 | 7 | Wendy Enn (SIN) | 1:02.74 | | FC |
| 22 | 4 | 7 | Manisha Adhikari (NEP) | 1:03.49 | | FD |
| 23 | 3 | 2 | Jenili Hilario Rodrigues (AND) | 1:06.91 | | FD |
| 24 | 1 | 2 | Michidmaa Khatanbuuvei (MGL) | 1:11.69 | | FD |
| 25 | 1 | 8 | Reloliza Saimon (FSM) | 1:12.41 | | FD |
| | 2 | 7 | Hani Abdirahman Muse (SOM) | DNF | | FD |
| | 1 | 7 | Halima Nakayi (UGA) | DSQ | | FD |

### Finals
#### Final D

| Rank | Lane | Athlete | Time | Notes |
| 1 | 4 | Jenili Hilario Rodrigues (AND) | 1:06.63 | |
| 2 | 3 | Reloliza Saimon (FSM) | 1:07.12 | PB |
| | 6 | Michidmaa Khatanbuuvei (MGL) | DSQ | |
| | 2 | Halima Nakayi (UGA) | DSQ | |
| | 7 | Hani Abdirahman Muse (SOM) | DNS | |
| | 5 | Manisha Adhikari (NEP) | DNS | |

### Final C

| Rank | Lane | Athlete | Time |
| 1 | 6 | Nickhelia Eudora Atida John (GRN) | 57.31 |
| 2 | 4 | Elina Mikhina (KAZ) | 58.11 |
| 3 | 5 | Mariama Kadijatu Conteh (SLE) | 58.56 |
| 4 | 3 | Tabique Lockhart (DMA) | 59.44 |
| 5 | 2 | Wendy Enn (SIN) | 1:02.43 |
| | 7 | Loth Toni (BEN) | DSQ |

#### Final B

| Rank | Lane | Athlete | Time |
| 1 | 5 | Romana Tea Kirinic (CRO) | 55.59 |
| 2 | 4 | Katarina Ilic (SRB) | 55.77 |
| 3 | 3 | Victoria Ohuruogu (GBR) | 55.99 |
| 4 | 6 | Frederique Hansen (LUX) | 56.35 |
| 5 | 8 | Yaneth Largacha (COL) | 56.43 |
| 6 | 7 | Kemesha Spann (TRI) | 57.07 |
| 7 | 2 | Tsiatengy Razafindrakoto (MAD) | 58.53 |

#### Final A

| Rank | Lane | Athlete | Time | Notes |
| | 6 | Robin Reynolds (USA) | 52.57 | SB |
| | 4 | Bianca Răzor (ROU) | 53.10 | |
| | 3 | Bukola Abogunloko (NGR) | 53.47 | |
| 4 | 5 | Rashan Brown (BAH) | 53.63 | PB |
| 5 | 7 | Katherine Reid (CAN) | 53.69 | |
| 6 | 2 | Olivia James (JAM) | 54.14 | |
| 7 | 8 | Sonja Mosler (GER) | 55.20 | |
| 8 | 1 | Izelle Neuhoff (RSA) | 56.27 | |