100 m Breaststroke, Men
| Competition | 1978 South American Games |
|---|---|
| Venue |
La Paz
 BOL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Gerardo Mayorca |  ARG |
— | ||
| 🥈 | Alejandro Morkunas | ARG |
— | ||
| 🥉 | Daniel Hernández |  URU |
— |
| Competition | 1978 South American Games |
|---|---|
| Venue |
La Paz
BOL
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 2 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Gerardo Mayorca | ARG |
— | ||
| 🥈 | Alejandro Morkunas | ARG |
— | ||
| 🥉 | Daniel Hernández | URU |
— |