The 1945 South American Championships in Athletics were held in the Uruguayan capital, Montevideo, between 15 and 22 April.

Medal summary

Men's events

Event	Gold		Silver		Bronze
100 metres	José de Assis  Brazil	10.5 CR	Walter Pérez  Uruguay	10.7	Adelio Márquez  Argentina	10.7
200 metres	José de Assis  Brazil	21.3 CR	Adelio Márquez  Argentina	21.4	Rodolfo Carrera  Argentina	22.4
400 metres	Jorge Ehlers  Chile	49.0	Agenor da Silva  Brazil	49.2	Rosalvo Ramos  Brazil	49.4
800 metres	Agenor da Silva  Brazil	1:55.3	Nilo Riveros  Argentina	1:55.8	Alfonso Rozas  Chile	1:56.5
1500 metres	Roberto Yokota  Chile	4:05.2	Alfonso Rozas  Chile	4:05.9	Guillermo García  Chile	4:07.0
3000 metres	Raúl Ibarra  Argentina	8:39.4	Raúl Inostroza  Chile	8:41.8	Delfo Cabrera  Argentina	8:48.8
5000 metres	Raúl Ibarra  Argentina	15:00.4	Raúl Inostroza  Chile	15:04.6	Reinaldo Gorno  Argentina	15:24.2
10,000 metres	Raúl Ibarra  Argentina	31:52.6	Reinaldo Gorno  Argentina	32:38.2	Oscar Ibarra  Argentina	32:48.6
Road race	Corsino Fernández  Argentina	1:46:20	Julio Montecinos  Chile	1:50:48	José Berger  Brazil	1:54:12
110 metres hurdles	Julio Ramírez  Uruguay	14.7 CR	Julio Jaime  Uruguay	14.9	Hélio Pereira  Brazil	15.0
400 metres hurdles	José López  Argentina	55.3	Sylvio Padilha  Brazil	55.3	Hércules Azcune  Uruguay	56.3
4 × 100 metres relay	Brazil Edgar dos Santos José de Assis Geraldo da Luz Renato Bastianon	41.9 CR	Argentina Hector Ravano Lucio Florio Adelio Marquez Carlos Isaack	42.0	Uruguay Walter Pérez José Cuneo Julio Jaime Domingo Borallo	43.3
4 × 400 metres relay	Brazil Rosalvo Ramos Sobrinho Agenor da Silva José de Assis	3:16.5 CR	Argentina Adelio Marquez Agustín Martín Leopoldo Monastirsky Antonio Pocovi	3:20.0	Uruguay Leal Raimundo Carne Nelson García	3:28.7
3000 metres team race	Argentina	11	Brazil	15	Chile	24
Cross country	Reinaldo Gorno  Argentina	44:12.4	Joaquim da Silva  Brazil	44:14.6	Raúl Ibarra  Argentina	44:29.4
High jump	Hércules Azcune  Uruguay	1.90	Celso Dória  Brazil	1.85	Pedro Listur  Uruguay	1.85
Pole vault	Icaro Mello  Brazil	3.90	Raimundo Rodrigues  Brazil	3.90	Federico Horn  Chile	3.80
Long jump	José de Assis  Brazil	7.09	Alfredo Meynet  Chile	6.89	Alberto Eggeling  Chile	6.78
Triple jump	Geraldo de Oliveira  Brazil	14.43	Celestino Sarraua  Argentina	14.17	Néstor Tenorio  Argentina	14.16
Shot put	Emilio Malchiodi  Argentina	14.69 CR	Ricardo Nitz  Brazil	14.39	Julián Llorente  Argentina	14.21
Discus throw	Emilio Malchiodi  Argentina	44.27	Celso Dória  Brazil	43.85	Bento Barros  Brazil	42.77
Hammer throw	Juan Fusé  Argentina	48.33	Dário Tavares  Brazil	48.18	Bento Barros  Brazil	47.12
Javelin throw	Raúl Cóccaro  Uruguay	57.08	Efraín Santibáñez  Chile	56.05	Rodolfo Correa  Chile	55.26
Decathlon	Mario Recordón  Chile	6338	Celso Dória  Brazil	6217	Raimundo Rodrigues  Brazil	6060

Women's events

Event	Gold		Silver		Bronze
100 metres	Beatriz Kretschmer  Chile	12.4 =CR	Noemí Simonetto  Argentina	12.5	Oldemia Bargiela  Argentina	12.8
200 metres	Elizabeth Müller  Brazil	26.4	Oldemia Bargiela  Argentina	27.1	Beatriz Kretschmer  Chile	27.1
80 metres hurdles	Noemí Simonetto  Argentina	11.7 CR	Stella Ardinghi  Brazil	12.0	Erica Renner  Brazil	12.4
4 × 100 metres relay	Argentina Oldemia Bargiela Camila Gómez Elsa Irigoyen Noemi Simonetto	50.2	Chile Ines Kriwizan Annegret Weller Betty Morales Betty Kretschmer	51.1	Brazil Erica Renner Stella Ardinghi Lisete Regina Elizabeth Müller	51.2
High jump	Ilse Barends  Chile	1.58 CR	Noemí Simonetto  Argentina	1.50	Elizabeth Müller  Brazil	1.50
Long jump	Noemí Simonetto  Argentina	5.44 CR	Elizabeth Müller  Brazil	5.32	Lucy Lake  Chile	5.03
Shot put	Elizabeth Müller  Brazil	11.79	Edith Klempau  Chile	11.75	Lore Zippelius  Chile	11.41
Discus throw	Ivete Mariz  Brazil	37.40 CR	Lore Zippelius  Chile	37.28	Christel Balde  Chile	36.98
Javelin throw	Ursula Holle  Chile	38.24 CR	Gerda Martín  Chile	36.25	Edith Klempau  Chile	34.42

Medal table

Rank	Nation	Gold	Silver	Bronze	Total
1	Argentina (ARG)	13	9	9	31
2	Brazil (BRA)	11	12	9	32
3	Chile (CHI)	6	10	11	27
4	Uruguay (URU)	3	2	4	9
Totals (4 entries)		33	33	33	99