100 m, Men
| Competition | 1978 South American Athletics U18 Championships |
|---|---|
| Venue |
Montevideo
 URU
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Hugo Alzamora |  ARG |
10.89 | ||
| 🥈 | Enrique Tapia |  CHI |
11.27 | ||
| 🥈 | Roberto Herrera | CHI |
11.27 |