| XIII South American Junior Championships in Athletics | |
| Size: | 200px |
| Host City: | Santiago, Chile  |
| Dates: | October 23–26 |
| Nations Participating: | 8 |
| Athletes Participating: | about 191 |
| Events: | 36 |
| Level: | Under-19 |
| Previous: | 1978 São Paulo |
| Next: | 1981 Rio de Janeiro |
The 13th South American Junior Championships in Athletics were held in Santiago, Chile from October 23–26, 1980.
Detailed result lists can be found on the "World Junior Athletics History" website. An unofficial count yields the number of about 191 athletes from about 8 countries: Argentina (49), Brazil (43), Chile (54), Colombia (9), Ecuador (13), Paraguay (9), Peru (11), Uruguay (3).
Medal winners are published for men and women.Complete results can be found on the "World Junior Athletics History" website.
| 100 metres | 10.86 | 10.86 | 11.06 | ||||
| 200 metres | 21.84 | 21.94 | 21.96 | ||||
| 400 metres | 47.17 | 48.64 | 48.68 | ||||
| 800 metres | 1:50.5 | 1:52.5 | 1:55.8 | ||||
| 1500 metres | 3:55.4 | 3:56.4 | 3:57.5 | ||||
| 5000 metres | 14:40.3 | 14:48.0 | 15:06.3 | ||||
| 110 metres hurdles | 15.06 | 15.37 | 15.38 | ||||
| 400 metres hurdles | 53.59 | 54.46 | 54.77 | ||||
| 2000 metres steeplechase | 5:51.7 | 5:55.2 | 5:58.5 | ||||
| 4 × 100 metres relay | 41.17 | 41.26 | 42.10 | ||||
| 4 × 400 metres relay | 3:13.1 | 3:17.5 | 3:19.3 | ||||
| High jump | 2.10 | 1.99 | 1.96 | ||||
| Pole vault | 4.60 | 4.55 | 4.40 | ||||
| Long jump | 7.08 | 7.02 | 6.93 | ||||
| Triple jump | 14.76 | 14.40 | 14.28 | ||||
| Shot put | 15.40 | 15.26 | 14.84 | ||||
| Discus throw | 45.14 | 40.52 | 39.02 | ||||
| Hammer throw | 57.78 | 52.66 | 51.84 | ||||
| Javelin throw | 60.00 | 58.38 | 57.80 | ||||
| Decathlon | 6563 | 6473 | 6355 |
| 100 metres | 12.19 | 12.22 | 12.44 | ||||
| 200 metres | 24.70 | 25.04 | 25.06 | ||||
| 400 metres | 56.67 | 56.87 | 56.95 | ||||
| 800 metres | 2:11.5 | 2:11.8 | 2:12.6 | ||||
| 1500 metres | 4:44.1 | 4:45.1 | 4:46.9 | ||||
| 3000 metres | 10:15.8 | 10:20.6 | 10:24.1 | ||||
| 100 metres hurdles | 14.02 | 14.82 | 14.87 | ||||
| 200 metres hurdles | 27.80 | 28.17 | 28.85 | ||||
| 4 × 100 metres relay | 47.10 | 47.37 | 47.64 | ||||
| 4 × 400 metres relay | 3:43.4 | 3:47.6 | 3:54.6 | ||||
| High jump | 1.76 | 1.70 | 1.67 | ||||
| Long jump | 5.52 | 5.49 | 5.49 | ||||
| Shot put | 12.83 | 12.74 | 12.09 | ||||
| Discus throw | 40.44 | 39.98 | 38.12 | ||||
| Javelin throw | 44.88 | 44.62 | 42.86 | ||||
| Pentathlon | 3599 | 3648 | 3417 |