The 1975 South American Championships in Athletics were held at the Estádio Célio de Barros in Rio de Janeiro, Brazil, between 26 and 31 August.

Event	Gold		Silver		Bronze
100 metres	Rui da Silva  Brazil	10.5	Nelson dos Santos  Brazil	10.7	Gustavo Dubarbier  Argentina	10.7
200 metres	Rui da Silva  Brazil	20.9 =CR	Jorge Mathias  Brazil	21.5	Gustavo Dubarbier  Argentina	21.5
400 metres	Delmo da Silva  Brazil	47.0	Jesús Villegas  Colombia	48.0	Pedro Teixeira  Brazil	48.4
800 metres	Carlos Villar  Argentina	1:50.6	Darcy Pereira  Brazil	1:51.4	Agberto Guimarães  Brazil	1:51.8
1500 metres	Jesús Barrero  Colombia	3:50.2	Abel Córdoba  Argentina	3:50.9	Cosme do Nascimento  Brazil	3:52.4
5000 metres	Domingo Tibaduiza  Colombia	14:01.2 CR	Víctor Mora  Colombia	14:02.2	Edmundo Warnke  Chile	14:05.6
10,000 metres	Víctor Mora  Colombia	28:45.8 CR	Domingo Tibaduiza  Colombia	28:45.8	Edmundo Warnke  Chile	28:46.2
Marathon	Héctor Rodríguez  Colombia	2:12:09 CR	Brígido Ferreira  Brazil	2:21:56	César Pastrano  Ecuador	2:28:55
110 metres hurdles	Márcio Lomónaco  Brazil	14.2 CR	Jesús Villegas  Colombia	14.4	Alfredo Guzmán  Chile	14.8
400 metres hurdles	Jesús Villegas  Colombia	50.8 CR	Fabio Zúñiga  Colombia	51.2	Aroldo Evangelista da Silva  Brazil	51.7
3000 metres steeplechase	José Romão Silva  Brazil	8:46.0 CR	Víctor Mora  Colombia	8:53.8	Jesús Barrero  Colombia	9:00.4
4 × 100 metres relay	Brazil Ronaldo Lobato Nelson dos Santos João Carlos de Oliveira Rui da Silva	40.8	Colombia Benjamín Herrera Jesús Villegas Fabio Zúñiga Julio Escobar	41.3	Argentina Carlos Martínez Carlos Bertotti Raúl Ham Gustavo Dubarbier	41.5
4 × 400 metres relay	Brazil Geraldo Silva Aroldo Evangelista da Silva Pedro Teixeira Delmo da Silva	3:09.2 CR	Argentina Gustavo Dubarbier Rubén Buscaglia Hugo Tanino Carlos Bertotti	3:14.6	Chile Alfredo Guzmán Juan Santiago Gordón Francisco Pichott Alfredo Silva	3:22.1
20 kilometres road walk	Ernesto Alfaro  Colombia	1:39:12 CR	Rafael Vega  Colombia	1:39:52	Adalberto Scorza  Argentina	1:42:15
High jump	Benedito Francisco  Brazil	2.10 CR	Luis Barrionuevo  Argentina	2.03	Daniel Mamet  Argentina	2.03
Pole vault	Renato Bortolocci  Brazil	4.50 =CR	Ciro Valdés  Colombia	4.50	Fernando Ruocco  Uruguay	4.00
Long jump	João Carlos de Oliveira  Brazil	7.66 CR	Emilio Mazzeo  Argentina	7.39	Ronaldo Lobato  Brazil	7.33
Triple jump	João Carlos de Oliveira  Brazil	16.48 CR	Nelson Prudêncio  Brazil	16.45	Francisco Pichott  Chile	15.07
Shot put	Juan Turri  Argentina	18.21 CR	José Jacques  Brazil	16.53	José Luiz Carabolante  Brazil	16.39
Discus throw	Sérgio Thomé  Brazil	50.84	José Jacques  Brazil	49.64	Mario Peretti  Argentina	47.82
Hammer throw	Darwin Piñeyrúa  Uruguay	61.20	José Vallejo  Argentina	61.10	Celso de Moraes  Brazil	60.84
Javelin throw	Jorge Peña  Chile	71.74 CR	Mario Sotomayor  Colombia	71.16	Paulo de Faría  Brazil	69.40
Decathlon	Tito Steiner  Argentina	7615 AR	Geraldo Rodrigues  Brazil	6939	Alfredo Silva  Chile	6794

Event	Gold		Silver		Bronze
100 metres	Silvina Pereira  Brazil	11.7 =CR	Carmela Bolívar  Peru	11.9	Beatriz Allocco  Argentina	11.9
200 metres	Silvina Pereira  Brazil	23.4 AR	Beatriz Allocco  Argentina	24.2	Margarita Grün  Uruguay	24.9
400 metres	Alejandra Ramos  Chile	55.7	Valdea Chagas  Brazil	55.9	Miriam da Silva  Brazil	56.0
800 metres	Ana María Nielsen  Argentina	2:10.7 CR	Rosângela Verissimo  Brazil	2:10.8	Alejandra Ramos  Chile	2:12.1
1500 metres	Ana María Nielsen  Argentina	4:27.0 CR	Iris Fernández  Argentina	4:31.9	Mara Führmann  Brazil	4:34.7
100 metres hurdles	Maria Luisa Betioli  Brazil	14.3	Emilia Dyrzka  Argentina	14.6	Viviane Nouailhetas  Brazil	14.7
4 × 100 metres relay	Argentina Belkis Fava Angela Godoy Liliana Cragno Beatriz Allocco	45.9 CR	Brazil Maria Amorim Nivea Pacifico Elisabeth Nunes Silvina Pereira	45.9	Peru Adriana Caruggi Beatriz Pacheco Carmela Bolivár Simone Krauthausen	48.5
4 × 400 metres relay	Brazil Maria da Silva Rosângela Verissimo Valdea Chagas Miriam da Silva	3:43.8 CR	Argentina Angela Godoy Rita Femia Adriana Britos Graciela Ghelfi	3:52.6	Uruguay Alicia Vicent Laura Oyhantocábal Josefa Vicent Margarita Grün	3:56.4
High jump	Maria Luisa Betioli  Brazil	1.75 =CR	Jurema da Silva  Brazil	1.68	Rosemarie Boeck  Peru	1.62
Long jump	Silvina Pereira  Brazil	6.11 CR	Marlene Nascimento  Brazil	5.84	Yvonne Neddermann  Argentina	5.77
Shot put	Maria Boso  Brazil	14.05	Rosa Molina  Chile	13.52	Verônika Brunner  Brazil	13.33
Discus throw	Odete Domingos  Brazil	50.78 AR	Maria Boso  Brazil	45.18	Gladys Ortega  Argentina	42.24
Javelin throw	Mariela Zapata  Colombia	43.72	Bárbara dos Santos  Brazil	41.10	María Elena Rojas  Chile	40.68
Pentathlon	Conceição Geremias  Brazil	3904	Themis Zambrzycki  Brazil	3790	Emilia Dyrzka  Argentina	3708

Rank	Nation	Gold	Silver	Bronze	Total
1	Brazil	21	16	12	49
2	Colombia	7	10	1	18
3	Argentina	6	9	10	25
4	Chile	2	1	8	11
5	Uruguay	1	0	3	4
6	Peru	0	1	2	3
7	Ecuador	0	0	1	1
Totals (7 entries)		37	37	37	111

• Men Results – GBR Athletics
• Women Results – GBR Athletics
• Medallists