| Rnk | Perf | Mark | Wind | Name | Nat | Born | Pos | Meet | Venue | Date | Ht/Wt | Record | Event |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 44.5my | John Smith | USA | 5Aug1950 | 1 | AAU | Eugene OR | 26Jun1971 | 187/82 | PB | 400 | |
| 2 | 2 | 44.7my | Wayne Collett | USA | 20Oct1949 | 2 | AAU | Eugene OR | 26Jun1971 | 188/84 | 400 | ||
| 3 | 44.60A | John Smith | 1 | PAmG | Calí | 1Aug1971 | 400 | ||||||
| 3 | 4 | 45.08A | Fred Newhouse | USA | 8Nov1948 | 2 | PAmG | Calí | 1Aug1971 | 175/68 | 400 | ||
| 5 | 45.3my | John Smith | 1 | NCAA | Seattle WA | 19Jun1971 | 400 | ||||||
| 6 | 45.4my | Wayne Collett | 1 | Seattle WA | 22May1971 | 400 | |||||||
| 4 | 7 | 45.4my | Tommie Turner | USA | 17Jan1947 | 1h2 | NCAA | Seattle WA | 18Jun1971 | 175/68 | PB | 400 | |
| 5 | 8 | 45.4my | Edesel Garrison | USA | 17Aug1950 | 2 | NCAA | Seattle WA | 19Jun1971 | 187/84 | PB | 400 | |
| 6 | 9 | 45.30A | Fernando Acevedo | PER | 26Jul1946 | 3 | PAmG | Calí | 1Aug1971 | 174/64 | NR | 400 |