# Swimming at the 2011 Pan American Games – Women's 4 × 100 metre freestyle relay

The women's 4 × 100 metre freestyle relay competition of the swimming events at the 2011 Pan American Games took place on the 15 of October at the Scotiabank Aquatics Center. The defending Pan American Games champion is the United States (Samantha Woodward, Julia Smit, Emily Kukors and Maritza Correia).
This race consisted of eight lengths of the pool. Each of the four swimmers completed two lengths of the pool. The first swimmer had to touch the wall before the second could leave the starting block.

## Records

Prior to this competition, the existing world and Pan American Games records were as follows:
| World record | Netherlands (NED) Inge Dekker (53.61) Ranomi Kromowidjojo (52.30) Femke Heemskerk (53.03) Marleen Veldhuis (52.78) | 3:31.72 | Rome, Italy | July 26, 2009 |
| Pan American Games record | United States (USA) Amanda Weir (54.46) Christina Swindle (55.75) Colleen Lanne (55.99) Courtney Shealy (55.73) | 3:41.93 | Santo Domingo, Dominican Republic | August 13, 2003 |

## Results

All times shown are in minutes.
| KEY: | q | Fastest non-qualifiers | Q | Qualified | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best | PR | Pan American Games record |

### Heats

The first round was held on October 15.
| Rank | Heat | Lane | Name | Nationality | Time | Notes |
| 1 | 2 | 4 | Madison Kennedy (55.63) Elizabeth Pelton (55.47) Amanda Kendall (54.49) Erika Erndl (55.26) | United States | 3:40.85 | Q, GR |
| 2 | 2 | 6 | Graciele Herrmann (56.55) Michelle Lenhardt (58.32) Flavia Delaroli-Cazziolato (56.33) Tatiana Barbosa (56.92) | Brazil | 3:48.12 | Q |
| 3 | 2 | 2 | Caroline Lapierre (57.29) Gabrielle Soucisse (59.40) Ashley McGregor (58.06) Jennifer Beckberger (56.44) | Canada | 3:51.19 | Q |
| 4 | 2 | 5 | Maria Fernanda Gonzalez (57.18) Martha Beltran (58.54) Gabriela Verdugo (1:00.73) Liliana Ibáñez (56.98) | Mexico | 3:53.43 | Q |
| 5 | 1 | 4 | Jeserik Pinto (58.34) Mercedes Toledo (59.40) Ximena Vilar (58.06) Wendy Rodriguez (58.54) | Venezuela | 3:54.34 | Q |
| 6 | 1 | 6 | Ariel Weech (59.00) Alicia Lightbourne (59.82) McKayla Lightbourne (1:00.59) Alana Dillette (58.72) | Bahamas | 3:58.13 | Q |
| 7 | 1 | 5 | Virginia Bardach (59.80) Florencia Perotti (1:01.09) Nadia Colovini (57.19) Cecilia Biagioli (1:00.53) | Argentina | 3:58.61 | Q |
| 8 | 2 | 3 | Andrea Cedron (1:00.99) Oriele Espinoza (1:02.35) Daniela Miyahara (1:02.14) Mariangela Macchiavello (59.40) | Peru | 4:04.88 | Q |
| | 1 | 3 | | Uruguay | DNS | |

### Final

The final was held on October 15.
| Rank | Lane | Name | Nationality | Time | Notes |
| | 4 | Madison Kennedy (55.55) Elizabeth Pelton (55.25) Amanda Kendall (54.62) Erika Erndl (55.24) | United States | 3:40.66 | GR |
| | 5 | Michelle Lenhardt (57.06) Tatiana Barbosa (55.52) Flavia Delaroli-Cazziolato (55.83) Daynara de Paula (56.21) | Brazil | 3:44.62 | |
| | 3 | Jennifer Beckberger (56.27) Caroline Lapierre (56.86) Ashley McGregor (58.16) Paige Schultz (57.08) | Canada | 3:48.37 | |
| 4 | 2 | Jeserik Pinto (57.62) Wendy Rodriguez (57.92) Erika Torellas (58.00) Arlene Semeco (55.01) | Venezuela | 3:48.55 | NR |
| 5 | 6 | Maria Fernanda Gonzalez (57.12) Martha Beltran (58.18) Arantxa Medina (58.97) Liliana Ibáñez (55.60) | Mexico | 3:49.87 | NR |
| 6 | 1 | Nadia Colovini (56.55) Cecilia Bertoncello (58.62) Virginia Bardach (58.76) Cecilia Biagioli (57.97) | Argentina | 3:51.90 | NR |
| 7 | 7 | Ariel Weech (57.98) Alicia Lightbourne (58.72) McKayla Lightbourne (59.66) Alana Dillette (57.92) | Bahamas | 3:54.28 | |
| 8 | 8 | Andrea Cedron (59.93) Maria Alejandra Torres (1:01.56) Daniela Miyahara (1:00.34) Mariangela Macchiavello (58.81) | Peru | 4:00.64 | NR |