# Swimming at the 2019 Pan American Games – Mixed 4 × 100 metre freestyle relay

The mixed 4 × 100 metre freestyle relay competition of the swimming events at the 2019 Pan American Games were held on August 7, 2019 at the Villa Deportiva Nacional Videna cluster.

## Records

Prior to this competition, the existing World Record was as follows:
| World record | United States (USA) Caeleb Dressel (47.34) Zach Apple (47.34) Mallory Comerford (52.72) Simone Manuel (52.00) | 3:19.40 | Gwangju, South Korea | July 27, 2019 |
The following games record was established during the competition:
| Date | Event | Swimmer | Time | Record |
| August 7 | Heat 1 | United States (USA) Andrew Abruzzo (51.70) Charles Swanson (50.85) Madison Kennedy (55.72) Ali DeLoof (55.25) | 3:33.52 | GR |
| August 7 | Heat 2 | Brazil (BRA) João de Lucca (49.33) Pedro Spajari (48.84) Lorrane Ferreira (57.18) Camila Mello (56.97) | 3:32.32 | GR |
| August 7 | Final | United States (USA) Michael Chadwick (49.09) Nathan Adrian (47.56) Claire Rasmus (55.10) Margo Geer (53.09) | 3:24.84 | GR |

## Results

| KEY: | Q | Qualified | GR | Games record | NR | National record | PB | Personal best | SB | Seasonal best |

### Heats

The first round was held on August 7.
| Rank | Heat | Lane | Nation | Swimmers | Time | Notes |
| 1 | 2 | 4 | Brazil | João de Lucca (49.33) Pedro Spajari (48.84) Lorrane Ferreira (57.18) Camila Mello (56.97) | 3:32.32 | Q, GR |
| 2 | 1 | 3 | United States | Andrew Abruzzo (51.70) Charles Swanson (50.85) Madison Kennedy (55.72) Ali DeLoof (55.25) | 3:33.52 | Q, GR |
| 3 | 2 | 2 | Canada | Javier Acevedo (52.99) James Dergousoff (51.94) Kyla Leibel (55.60) Alexia Zevnik (55.74) | 3:36.27 | Q |
| 4 | 1 | 5 | Mexico | Daniel Ramírez (49.45) Tayde Revilak (58.01) Marie Condé (59.00) José Martínez Gómez (51.22) | 3:37.68 | Q |
| 5 | 1 | 4 | Argentina | Lautaro Rodríguez (51.23) Guido Buscaglia (49.99) Macarena Ceballos (57.52) Andrea Berrino (1:00.83) | 3:39.57 | Q |
| 6 | 2 | 6 | Peru | Sebastián Arispe (52.12) Jessica Cattaneo (59.69) Ricardo Espinosa (51.56) McKenna DeBever (56.39) | 3:39.76 | Q |
| 7 | 2 | 3 | Bahamas | Jared Fitzgerald (51.23) Gershwin Greene (52.42) Ariel Weech (59.61) Margaret Higgs (58.60) | 3:41.86 | Q, NR |
| 8 | 2 | 5 | Venezuela | Antoine Khazne (51.91) Andy Arteta (53.30) Fabiana Pesce (59.17) Simone Palomo (59.25) | 3:43.63 | Q |
| 9 | 1 | 6 | Panama | Isaac Beitia (51.89) Catharine Cooper (1:00.66) Ireyra Tamayo (1:02.90) Hernán Gonzalez (59.66) | 3:55.11 | |

### Final

The final round was also held on August 7.
| Rank | Lane | Nation | Swimmers | Time | Notes |
| | 5 | United States | Michael Chadwick (49.09) Nathan Adrian (47.56) Claire Rasmus (55.10) Margo Geer (53.09) | 3:24.84 | GR |
| | 4 | Brazil | Breno Correia (48.81) Marcelo Chierighini (47.61) Larissa Oliveira (54.72) Etiene Medeiros (54.83) | 3:25.97 | |
| | 6 | Mexico | Daniel Ramírez (49.64) Jorge Iga (48.76) Monika González-Hermosillo (56.19) María Mata (56.77) | 3:31.36 | NR |
| 4 | 8 | Venezuela | Cristian Quintero (49.00) Alberto Mestre Vivas (49.38) Jeserik Pinto (57.27) Andrea Santander (58.57) | 3:34.22 | |
| 5 | 2 | Argentina | Guido Buscaglia (50.17) Federico Grabich (49.27) Delfina Pignatiello (58.15) Andrea Berrino (57.28) | 3:34.87 | |
| 6 | 3 | Canada | Alyson Ackman (55.67) James Dergousoff (52.57) Alexia Zevnik (54.54) Javier Acevedo (52.41) | 3:35.19 | |
| 7 | 1 | Bahamas | Jared Fitzgerald (50.97) Gershwin Greene (52.42) Ariel Weech (59.58) Lillian Higgs (59.62) | 3:42.59 | |
| 8 | 7 | Peru | Ricardo Espinosa (52.52) Silvana Cabrera (1:01.89) Javier Tang Juy (52.55) Azra Avdic (59.66) | 3:46.62 | |