# Swimming at the 2013 World Aquatics Championships – Women's 800 metre freestyle

The women's 800 metre freestyle event in swimming at the 2013 World Aquatics Championships took place on 2–3 August at the Palau Sant Jordi in Barcelona, Spain.

## Records

Prior to this competition, the existing world and championship records were:
| World record | Rebecca Adlington (GBR) | 8:14.10 | Beijing, China | 16 August 2008 |
| Competition record | Lotte Friis (DEN) | 8:15.92 | Rome, Italy | 1 August 2009 |
The following new records were set during this competition.
| Date | Event | Name | Nationality | Time | Record |
| 3 August | Final | Katie Ledecky | United States | 8:13.86 | WR |

## Results
### Heats

The heats were held at 2 August.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 4 | 4 | Katie Ledecky | United States | 8:20.65 | Q |
| 2 | 2 | 5 | Lauren Boyle | New Zealand | 8:21.00 | Q, OC |
| 3 | 4 | 5 | Lotte Friis | Denmark | 8:23.00 | Q |
| 4 | 2 | 4 | Mireia Belmonte | Spain | 8:25.03 | Q |
| 5 | 3 | 3 | Boglárka Kapás | Hungary | 8:25.26 | Q |
| 6 | 3 | 7 | Martina de Memme | Italy | 8:26.95 | Q |
| 7 | 3 | 6 | Andreina Pinto | Venezuela | 8:27.03 | Q |
| 8 | 4 | 3 | Chloe Sutton | United States | 8:27.41 | Q |
| 9 | 3 | 4 | Jazmin Carlin | Great Britain | 8:27.48 | |
| 10 | 2 | 3 | Jessica Ashwood | Australia | 8:27.74 | |
| 11 | 2 | 2 | Kristel Köbrich | Chile | 8:29.32 | |
| 12 | 4 | 2 | Shao Yiwen | China | 8:29.71 | |
| 13 | 3 | 2 | Alexa Komarnycky | Canada | 8:29.87 | |
| 14 | 3 | 5 | Xu Danlu | China | 8:29.98 | |
| 15 | 3 | 1 | Sarah Köhler | Germany | 8:34.72 | |
| 16 | 3 | 0 | Samantha Arevalo | Ecuador | 8:35.99 | NR |
| 17 | 4 | 6 | Eleanor Faulkner | Great Britain | 8:36.04 | |
| 18 | 4 | 1 | Isabelle Härle | Germany | 8:36.83 | |
| 19 | 2 | 6 | Beatriz Gómez Cortes | Spain | 8:37.26 | |
| 20 | 4 | 7 | Savannah King | Canada | 8:40.35 | |
| 21 | 2 | 1 | Julia Hassler | Liechtenstein | 8:40.89 | |
| 22 | 4 | 0 | Susana Escobar | Mexico | 8:42.84 | |
| 23 | 2 | 8 | Tjasa Oder | Slovenia | 8:42.96 | |
| 24 | 4 | 8 | Katya Bachrouche | Lebanon | 8:50.08 | |
| 25 | 3 | 9 | Khoo Cai Lin | Malaysia | 8:51.87 | |
| 26 | 3 | 8 | Carolina Bilich | Brazil | 8:52.10 | |
| 27 | 4 | 9 | Virginia Bardach | Argentina | 8:52.79 | |
| 28 | 2 | 0 | Kyna Pereira | South Africa | 8:54.10 | |
| 29 | 2 | 9 | Andrea Basaraba | Serbia | 8:58.04 | |
| 30 | 1 | 6 | Valerie Gruest | Guatemala | 8:59.70 | |
| 31 | 1 | 4 | Benjaporn Sriphanomithorn | Thailand | 9:05.32 | |
| 32 | 1 | 3 | Lani Cabrera | Barbados | 9:08.84 | |
| 33 | 1 | 5 | Raina Ramdhani | Indonesia | 9:10.75 | |
| 34 | 1 | 2 | Daniela Miyahara | Peru | 9:15.94 | |
| 35 | 1 | 7 | Daniela Benavides | Cuba | 9:38.20 | |
| 36 | 1 | 8 | San Khant Khant Su | Myanmar | 10:03.20 | |
| 37 | 1 | 1 | Monica Saili | Samoa | 10:11.46 | |
| 38 | 1 | 0 | Victoria Chentsova | Northern Mariana Islands | 10:14.63 | |
| | 2 | 7 | Camille Muffat | France | | DNS |

### Final

The final was held at 19:26.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Katie Ledecky | United States | 8:13.86 | WR |
| | 3 | Lotte Friis | Denmark | 8:16.32 | |
| | 5 | Lauren Boyle | New Zealand | 8:18.58 | OC |
| 4 | 2 | Boglárka Kapás | Hungary | 8:21.21 | NR |
| 5 | 6 | Mireia Belmonte | Spain | 8:21.99 | |
| 6 | 8 | Chloe Sutton | United States | 8:27.75 | |
| 7 | 1 | Andreina Pinto | Venezuela | 8:29.37 | |
| 8 | 7 | Martina de Memme | Italy | 8:37.29 | |