| X South American Junior Championships in Athletics | |
| Size: | 200px |
| Host City: | Lima, Peru  |
| Dates: | October 9–13 |
| Stadium: | Estadio Nacional |
| Nations Participating: | 9 |
| Athletes Participating: | about 239 |
| Events: | 33 |
| Level: | Under-19 |
| Previous: | 1972 Asunción |
| Next: | 1976 Maracaibo |
The tenth South American Junior Championships in Athletics were held in Lima, Peru, at the Estadio Nacional between October 9–13, 1974.
Detailed result lists can be found on the "World Junior Athletics History" website. An unofficial count yields the number of about 239 athletes from about 9 countries: Argentina (44), Bolivia (11), Brazil (40), Chile (29), Colombia (17), Panama (10), Paraguay (11), Peru (45), Venezuela (32).
Medal winners are published for men and womenComplete results can be found on the "World Junior Athletics History" website.
| 100 metres | 10.7 | 10.8 | 11.0 | ||||
| 200 metres | 21.5 | 21.9 | 22.0 | ||||
| 400 metres | 49.2 | 49.6 | 49.6 | ||||
| 800 metres | 1:55.7 | 1:55.9 | 1:56.1 | ||||
| 1500 metres | 3:56.2 | 3:58.8 | |||||
| 3000 metres | 8:46.4 | 8:47.5 | 8:51.2 | ||||
| 110 metres hurdles | 15.6 | 15.9 | 16.0 | ||||
| 400 metres hurdles | 54.9 | 55.0 | 55.1 | ||||
| 1500 metres steeplechase | 4:20.1 | 4:21.0 | 4:27.7 | ||||
| 4 × 100 metres relay | 41.9 | José Ratto J. Esposito Salazar R. Vilchez | 42.5 | 42.9 | |||
| 4 × 400 metres relay | 3:18.5 | 3:19.4 | Luis Gómez J. Esposito Salazar Salazar | 3:22.8 | |||
| High jump | 1.94 | 1.91 | 1.91 | ||||
| Pole vault | 4.35 | 4.10 | 4.05 | ||||
| Long jump | 7.04 | 6.73 | 6.71 | ||||
| Triple jump | 14.42 | 14.06 | 13.86 | ||||
| Shot put | 15.98 | 15.66 | 14.44 | ||||
| Discus throw | 47.16 | 40.80 | 40.71 | ||||
| Hammer throw | 53.46 | 53.02 | 51.56 | ||||
| Javelin throw | 62.74 | 59.46 | 59.00 | ||||
| Pentathlon | 3898 | 3838 | 3687 |
| 100 metres | 11.8 | 11.8 | 12.0 | ||||
| 200 metres | 24.4 | 24.6 | 24.9 | ||||
| 400 metres | 55.3 | 56.3 | 56.4 | ||||
| 800 metres | 2:12.6 | 2:13.3 | 2:17.4 | ||||
| 100 metres hurdles | 14.4 | 14.5 | 15.1 | ||||
| 4 × 100 metres relay | 47.3 | 47.7 | Conceição Geremias Xavier Esmeralda de Jesus Garcia Nazareth | 47.9 | |||
| 4 × 400 metres relay | 3:54.1 | 3:56.8 | 4:01.4 | ||||
| High jump | 1.66 | 1.66 | 1.60 | ||||
| Long jump | 5.97 | 5.84 | 5.81 | ||||
| Shot put | 12.78 | 11.27 | 11.04 | ||||
| Discus throw | 43.46 | 37.62 | 35.72 | ||||
| Javelin throw | 40.14 | 39.40 | 39.10 | ||||
| Pentathlon | 3964 | 3688 | 3649 |