4 x 400 m Relay, Men
| Competition | 1973 South American Athletics U18 Championships |
|---|---|
| Venue |
Comodore Rivadavia
 ARG
|
| Held | — |
| Status | Medal |
| Competitors | 12 |
| Countries | 3 |
| Pos | Athlete(s) | Country | Mark | ||
|---|---|---|---|---|---|
| 🥇 | Argentina | ARG |
3:30.6 | ||
| Mauricio Besteiro | — | ||||
| Guillermo Assandri | — | ||||
| Marcelo Leguizamón | — | ||||
| Aníbal Lanz | — | ||||
| 🥈 | Paraguay |  PAR |
3:31.3 | ||
| G Sayas | — | ||||
| Ramón Migliorisi | — | ||||
| Ángel Bogado | — | ||||
| Ricardo Derene | — | ||||
| 🥉 | Chile |  CHI |
3:32.6 | ||
| Hugo Vicuña | — | ||||
| Rodrigo Garcés | — | ||||
| Arturo Zamorano | — | ||||
| G Huete | — |