The swimming competitions at the 2018 South American Games in Cochabamba took place from 27 to 30 May at the G.A.M.C. Aquatics Center at Mariscal Santa Cruz Park. Open water swimming events were held on 1 June at La Angostura Lake.

Event	Gold		Silver		Bronze
50m freestyle	Renzo Tjon-A-Joe  Suriname	22.65	Cristian Quintero  Venezuela	22.71	André Calvelo  Brazil	22.80
100m freestyle	Breno Correia  Brazil	49.40	Cristian Quintero  Venezuela	49.86	Renzo Tjon-A-Joe  Suriname	50.12
200m freestyle	Fernando Scheffer  Brazil	1:50.75	Cristian Quintero  Venezuela	1:50.89	Benjamin Hockin  Paraguay	1:52.03
400m freestyle	Guilherme Costa  Brazil	3:57.31	Rafael Davila  Venezuela	3:58.92	Esteban Enderica  Ecuador	4:01.62
1500m freestyle	Esteban Enderica  Ecuador	15:38.16	Guilherme Costa  Brazil	15:46.60	Rafael Davila  Venezuela	16:08.12
100m backstroke	Gabriel Fantoni  Brazil	55.89	Omar Pinzón  Colombia	56.31	Charles Hockin  Paraguay	56.65
200m backstroke	Gabriel Fantoni  Brazil	2:04.41	Matías López  Paraguay	2:04.62	Omar Pinzón  Colombia	2:05.37
100m breaststroke	Jorge Murillo  Colombia	1:01.14 GR	Renato Prono  Paraguay	1:02.10	Carlos Mahecha  Colombia	1:03.13
200m breaststroke	Jorge Murillo  Colombia	2:14.43 GR	Carlos Mahecha  Colombia	2:18.49	Juan Sequera  Venezuela	2:20.95
100m butterfly	Kaue Carvalho  Brazil	53.90	Esnaider Reales  Colombia	53.92	Matheus Gonche  Brazil	54.41
200m butterfly	Kaue Carvalho  Brazil	2:02.37	David Arias  Colombia	2:03.37	Miguel Armijos  Ecuador	2:05.17
200m individual medley	Omar Pinzón  Colombia	2:06.37	Juan Sequera  Venezuela	2:06.58	Matías López  Paraguay	2:06.96
400m individual medley	Matías López  Paraguay	4:38.76	Andy Arteta  Venezuela	4:46.15	Gustavo Gutiérrez  Peru	4:49.26
4×100m freestyle relay	Venezuela Jesus López (50.96) Bryan Chavez (49.70) Alberto Mestre Jr. (49.73) Cristian Quintero (49.13)	3:19.52	Brazil Marco Ferreira Júnior (50.90) Breno Correia (48.99) André Luiz de Souza (50.20) Fernando Scheffer (50.04)	3:20.13	Colombia Cardenio Fernández (52.25) Esnaider Reales (51.82) Carlos Mahecha (51.78) David Arias (51.67)	3:27.52
4×200m freestyle relay	Brazil Breno Correia (1:48.30) GR André Luiz de Souza (1:53.92) Kaue Carvalho (1:53.67) Fernando Scheffer (1:55.80)	7:31.69	Venezuela Bryan Chavez (1:54.00) Andy Arteta (1:56.37) Rafael Davila (1:56.53) Cristian Quintero (1:52.89)	7:39.79	Colombia Juan Morales (1:55.01) Omar Pinzón (2:03.30) David Arias (1:57.16) Esnaider Reales (1:54,64)	7:50.11
4×100m medley relay	Colombia Omar Pinzón (56.24) Jorge Murillo (1:00.78) Esnaider Reales (54.12) Cardenio Fernández (51.69)	3:42.83	Brazil Gabriel Fanton (55.54) Yuri Vieira (1:04.34) Kaue Carvalho (53.93) Marco Ferreira Júnior (49.34)	3:43.15	Venezuela Robinson Molina (57.81) Juan Sequera (1:03.08) Bryan Chavez (54.92) Cristian Quintero (49.18)	3:44.99
10 km open water	Esteban Enderica  Ecuador	1:52:01.52	Diego Vera  Venezuela	1:52:19.89	Wilder Carreño  Venezuela	1:54:50.94

Event	Gold		Silver		Bronze
50m freestyle	Isabella Arcila  Colombia	25.25 GR	Karen Torrez  Bolivia	25.60	Jeserik Pinto  Venezuela	25.96
100m freestyle	Isabella Arcila  Colombia	55.81	Karen Torrez  Bolivia	56.41	Jeserik Pinto  Venezuela	56.66
200m freestyle	Gabrielle Roncatto  Brazil	2:04.61	Rafaela Raurich  Brazil	2:04.80	María Álvarez  Colombia	2:04.90
400m freestyle	Kristel Köbrich  Chile	4:19.58	Gabrielle Roncatto  Brazil	4:25.70	María Álvarez  Colombia	4:25.88
800m freestyle	Kristel Köbrich  Chile	8:47.82	Samantha Arévalo  Ecuador	9:00.95	Beatriz Dizotti  Brazil	9:02.76
100m backstroke	Isabella Arcila  Colombia	1:01.82	Fernanda de Goeij  Brazil	1:02.94	McKenna DeBever  Peru	1:04.88
200m backstroke	Andrea Hurtado  Peru	2:19.13	Fernanda de Goeij  Brazil	2:19.55	Laura Melo  Colombia	2:22.94
100m breaststroke	Ana Carolina Vieira  Brazil	1:11.59	Mercedes Toledo  Venezuela	1:11.83	Bruna Monteiro Leme  Brazil	1:11.84
200m breaststroke	Bruna Monteiro Leme  Brazil	2:35.67	Beatriz Brandão Lysy  Brazil	2:35.79	Mercedes Toledo  Venezuela	2:37.16
100m butterfly	Jeserik Pinto  Venezuela	1:00.70	Karen Torrez  Bolivia	1:00.96	Clarissa Rodrigues  Brazil	1:02.40
200m butterfly	Beatriz Dizotti  Brazil	2:18.59	Azra Avdic  Peru	2:20.37	María Román  Colombia	2:21.98
200m individual medley	Gabrielle Roncatto  Brazil	2:20.11	Bruna Monteiro Leme  Brazil	2:20.88	McKenna DeBever  Peru	2:21.25
400m individual medley	Gabrielle Roncatto  Brazil	5:04.91	Azra Avdic  Peru	5:05.02	María Román  Colombia	5:12.72
4×100m freestyle relay	Brazil Ana Carolina Vieira (57.63) Camila Mello (56.70) Clarissa Rodrigues (58.00) Rafaela Raurich (57.88)	3:50.21	Colombia Valentina Becerra (59.94) Karen Durango (1:00.14) María Álvarez (58.24) Isabella Arcila (56.19)	3:54.21	Venezuela Fabiana Pesce (1:00.35) Andrea Garrido (59.60) Mariangela Cincotti (1:00.35) Jeserik Pinto (56.11)	3:56.41
4×200m freestyle relay	Brazil Ana Carolina Vieira (2:05.86) Camila Mello (2:04.54) Rafaela Raurich Gabrielle Roncatto	8:31.93	Colombia Karen Durango (2:09.89) María Román (2:09.68) Isabella Arcila (2:07.67) María Álvarez (2:05.60)	8:32.84	Peru Jessica Cattaneo (2:08.05) Azra Avdic (2:06.93) Andrea Hurtado (2:10.32) María Bramont-Arias (2:10.99)	8:36.29
4×100m medley relay	Brazil Fernanda de Goeij (1:03.61) Ana Carolina Vieira (1:11.40) Clarissa Rodrigues (1:02.06) Rafaela Raurich (56.61)	4:13.68	Colombia Isabella Arcila (1:02.57) Karina Vivas (1:11.53) Valentina Becerra (1:02.55) María Álvarez (57.68)	4:14.33	Peru Andrea Hurtado (1:06.76) McKenna DeBever (1:16.30) Azra Avdic (1:04.81) Jessica Cattaneo (58.63)	4:26.50
10 km open water	Samantha Arévalo  Ecuador	2:05:49	Romina Imwinkelried  Argentina	2:06:47	Nataly Caldas  Ecuador	2:10:25

• 2018 South American Games – Swimming (in Spanish)
• 2018 South American Games – Open water swimming (in Spanish)
• Results
• Results book