100 m Backstroke, Men
| Competition | 1978 South American Aquatics Championships |
|---|---|
| Venue |
Guayaquil
 ECU
|
| Held | — |
| Status | Medal |
| Competitors | 3 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Conrado Porta |  ARG |
58.21 | ||
| 🥈 | Rômulo Arantes |  BRA |
58.79 | ||
| 🥉 | José Yepes | ECU |
1:01.36 |