| XLV South American Swimming Championships | |
| Hostcity: | Buenos Aires, Argentina |
| Venues: | Parque Olímpico de la Juventud |
| Events: | 41 |
| Dates: | 16–19 March |
| Previous: | Trujillo 2018 |
| Next: | Cali 2024 |
The 45th South American Swimming Championships were held from 16 to 19 March at the Parque Olímpico de la Juventud in Buenos Aires, Argentina.
*Invitated countries
| 50 m freestyle | 22.44 | none awarded | none awarded | ||||
| 100 m freestyle | 49.36 | 49.43 | 49.60 | ||||
| 200 m freestyle | 1:50.22 | 1:50.25 | 1:50.45 | ||||
| 400 m freestyle | 3:54.24 | 3:54.46 | 3:55.54 | ||||
| 800 m freestyle | 8:02.29 | 8:08.50 | 8:09.51 | ||||
| 1500 m freestyle | 15:30.81 | 15:33.16 | 15:36.91 | ||||
| 50 m backstroke | 25.90 | 25.98 | 26.00 | ||||
| 100 m backstroke | 55.91 | 56.23 | 56.47 | ||||
| 200 m backstroke | 2:02.03 | 2:02.87 | 2:03.38 | ||||
| 50 m breaststroke | 27.60 | 27.83 | 28.37 | ||||
| 100 m breaststroke | 1:00.53 | 1:02.26 | 1:02.44 | ||||
| 200 m breaststroke | 2:12.70 | 2:14.01 | 2:19.49 | ||||
| 50 m butterfly | 24.03 | 24.07 | 24.29 | ||||
| 100 m butterfly | 53.40 | 53.65 | 53.90 | ||||
| 200 m butterfly | 1:58.76 | 2:01.15 | 2:01.60 | ||||
| 200 m individual medley | 2:00.84 | 2:03.77 | 2:03.99 | ||||
| 400 m individual medley | 4:19.92 | 4:29.72 | 4:30.62 | ||||
| 4 × 100 m freestyle relay | Guilherme Caribé Santos (50.74) Victor Alcará (49.02) Victor Baganha (49.61) Lucas Peixoto (49.17) | 3:18.54 | Alberto Mestre Vivas (49.63) Jesús López (50.91) Bryan Chávez (50.05) Cristian Quintero (49.05) | 3:19.64 | Joaquín González Piñero (51.45) Roberto Strelkov (49.87) Joaquín Renzi (51.60) Guido Buscaglia (49.47) | 3:22.39 | |
| 4 × 200 m freestyle relay | Murilo Sartori (1:49.47) Pablo Silva Vieira (1:51.26) Gustavo Saldo (1:49.19) Lucas Peixoto (1:54.40) | 7:24.32 | Joaquín González Piñero (1:51.11) Franco Melián (1:55.40) Martín Carrizo (1:54.32) Joaquín Renzi (1:53.20) | 7:34.03 | Jorge Depassier (1:55.69) Eduardo Cisternas (1:55.74) Mariano Lazzerini (1:56.02) Gabriel Araya (1:52.19) | 7:39.64 | |
| 4 × 100 m medley relay | Anthony Rincón (56.10) Jorge Murillo (1:00.20) Esnaider Reales (53.72) Santiago Aguilera (51.10) | 3:41.12 | Agustín Hernández (56.46) Gabriel Morelli (1:01.41) Nicolás Deferrari (54.48) Guido Buscaglia (49.30) | 3:41.65 | Pedro Motta (56.88) Davi Martins Mourão (1:04.18) Victor Baganha (52.66) Lucas Peixoto (49.19) | 3:42.91 | |
| 50 m freestyle | 25.38 | 25.52 | 25.74 | ||||
| 100 m freestyle | 55.97 | 56.01 | 56.86 | ||||
| 200 m freestyle | 2:01.83 | 2:02.12 | 2:03.77 | ||||
| 400 m freestyle | 4:15.00 | 4:17.32 | 4:18.25 | ||||
| 800 m freestyle | 8:34.10 | 8:34.11 | 9:44.82 | ||||
| 1500 m freestyle | 16:06.78 CR | 16:25.68 | 16:40.97 | ||||
| 50 m backstroke | 28.77 | 29.12 | 29.60 | ||||
| 100 m backstroke | 1:02.08 | 1:02.71 | 1:02.88 | ||||
| 200 m backstroke | 2:16.43 | 2:16.46 | 2:17.19 | ||||
| 50 m breaststroke | 31.27 CR | 31.55 | 31.91 | ||||
| 100 m breaststroke | 1:08.93 | 1:09.49 | 1:10.22 | ||||
| 200 m breaststroke | 2:27.59 | 2:28.53 | 2:31.18 | ||||
| 50 m butterfly | 26.66 | 26.94 | 27.36 | ||||
| 100 m butterfly | 1:00.27 | 1:00.49 | 1:00.61 | ||||
| 200 m butterfly | 2:14.09 | 2:14.58 | 2:15.51 | ||||
| 200 m individual medley | 2:16.07 | 2:16.83 | 2:17.76 | ||||
| 400 m individual medley | 4:49.76 | 4:53.98 | 4:57.50 | ||||
| 4 × 100 m freestyle relay | María Ruggiero (58.36) Lucía Gauna (56.95) Macarena Ceballos (57.64) Andrea Berrino (57.07) | 3:50.02 | Isabella Arcila (56.35) Karen Durango (57.86) María Álvarez (58.91) Daniela Gutiérrez (57.39) | 3:50.51 | Rafaela Raurich (57.52) Júlia Góes (58.11) Fernanda Andrade (57.61) Sofia Rondel (57.39) | 3:50.73 | |
| 4 × 200 m freestyle relay | Rafaela Raurich (2:01.24) Fernanda Andrade (2:07.09) Giulia Chicon (2:05.49) Sofia Rondel (2:01.53) | 8:15.35 | Lucía Gauna Virginia Bardach Delfina Dini (2:06.57) Delfina Pignatiello (2:04.71) | 8:20.71 | Karen Durango (2:06.04) Laura Melo (2:10.43) María Álvarez (2:04.72) Daniela Gutiérrez (2:06.76) | 8:27.95 | |
| 4 × 100 m medley relay | Andrea Berrino (1:03.31) Julia Sebastián (1:08.95) Macarena Ceballos (1:01.32) Lucía Gauna (56.98) | 4:10.56 | Isabella Arcila (1:01.92) Karina Vivas (1:10.29) Valentina Becerra (1:01.71) Daniela Gutiérrez (57.40) | 4:11.31 | Maria Luiza Pessanha (1:03.13) Gabrielle da Silva (1:11.00) Luanna de Oliveira (1:00.42) Fernanda Andrade (57.89) | 4:12.44 | |
| 4 × 100 m medley relay | Isabella Arcila (1:01.98) Jorge Murillo (1:00.15) Esnaider Reales (53.71) Daniela Gutiérrez (57.24) | 3:53.08 | 3:53.84 | Maria Luiza Pessanha (1:02.88) Gabrielle da Silva (1:11.69) Victor Baganha (53.34) Lucas Peixoto (48.92) | 3:56.83 |
| Rank | Team | Points |
|---|---|---|
| 1 | 439 | |
| 2 | 419.33 | |
| 3 | 267 | |
| 4 | 139 | |
| 5 | 122.33 | |
| 6 | 75.5 | |
| 7 | 69 | |
| 8 | 67.5 | |
| 9 | 51.33 | |
| 10 | 12 | |