All sub 1'45" performances from 1991
| # | Mark | SR | Athlete | IR | Nat | Pos | Venue | Date |
| 1 | 1.43.08 | 1 | José Luiz Barbosa | | BRA | 1 | Rieti | 06-09-1991 |
| 2 | 1.43.30 | 2 | William Tanui | | KEN | 2 | Rieti | 06-09-1991 |
| 3 | 1.43.75 | | José Luiz Barbosa | 2 | BRA | 1/A | Zürich | 07-08-1991 |
| 4 | 1.43.84 | 3 | Johnny Gray | | USA | 1 | Malmö | 05-08-1991 |
| 5 | 1.43.87 | | José Luiz Barbosa | 3 | BRA | 1 | Vigo | 23-07-1991 |
| 6 | 1.43.93 | 4 | Mark Everett | | USA | 1 | Sheffield | 15-09-1991 |
| 7 | 1.43.96 | 5 | Billy Konchellah | | KEN | 2 | Sheffield | 15-09-1991 |
| 8 | 1.43.99 | | Billy Konchellah | 2 | KEN | 1 | Tokyo | 27-08-1991 |
| 9 | 1.44.01 | | Johnny Gray | 2 | USA | 1 | Oslo | 06-07-1991 |
| 10 | 1.44.06 | 6 | Robert Kibet | | KEN | 2/A | Zürich | 07-08-1991 |
| 11 | 1.44.06 | 7 | Paul Ereng | | KEN | 3/A | Zürich | 07-08-1991 |
| 12 | 1.44.06 | | José Luiz Barbosa | 4 | BRA | 1 | Koblenz | 11-09-1991 |
| 13 | 1.44.07 | 8 | George Kersh | | USA | 4/A | Zürich | 07-08-1991 |
| 14 | 1.44.14 | | José Luiz Barbosa | 5 | BRA | 1 | Nice | 15-07-1991 |
| 15 | 1.44.20 | 9 | Tom McKean | | GBR | 2 | Malmö | 05-08-1991 |
| 16 | 1.44.24 | | José Luiz Barbosa | 6 | BRA | 2 | Tokyo | 27-08-1991 |
| 17 | 1.44.27 | 10 | Peter Elliott | | GBR | 5/A | Zürich | 07-08-1991 |
| 18 | 1.44.28 | | Mark Everett | 2 | USA | 1 | New York | 15-06-1991 |
| 19 | 1.44.34 | | Mark Everett | 3 | USA | 2 | Oslo | 06-07-1991 |
| 20 | 1.44.41 | | Tom McKean | 2 | GBR | 1 | Stockholm | 03-07-1991 |
| 21 | 1.44.41 | | William Tanui | 2 | KEN | 6/A | Zürich | 07-08-1991 |
| 22 | 1.44.52 | | Mark Everett | 4 | USA | 2 | Stockholm | 03-07-1991 |
| 23 | 1.44.67 | | Mark Everett | 5 | USA | 3 | Tokyo | 27-08-1991 |
| 24 | 1.44.70 | | Mark Everett | 6 | USA | 1 | Monaco | 03-08-1991 |
| 25 | 1.44.71 | | George Kersh | 2 | USA | 2 | New York | 15-06-1991 |
| 26 | 1.44.75 | | Paul Ereng | 2 | KEN | 4 | Tokyo | 27-08-1991 |
| 27 | 1.44.79 | 11 | Noureddine Morceli | | ALG | 1 | Annaba | 29-07-1991 |
| 28 | 1.44.83 | | Johnny Gray | 3 | USA | 3 | New York | 15-06-1991 |
| 29 | 1.44.83 | 12 | Ocky Clark | | USA | 2 | Vigo | 23-07-1991 |
| 30 | 1.44.84 | | José Luiz Barbosa | 7 | BRA | 1 | Bruxelles | 13-09-1991 |
| 31 | 1.44.85 | | Noureddine Morceli | 2 | ALG | 1 | Neubrandenburg | 21-06-1991 |
| 32 | 1.44.85 | | William Tanui | 3 | KEN | 1 | Luzern | 06-07-1991 |
| 33 | 1.44.88 | | Ocky Clark | 2 | USA | 4 | New York | 15-06-1991 |
| 34 | 1.44.92 | 13 | Paul Ruto | | KEN | 3 | Malmö | 05-08-1991 |
| 35 | 1.44.94 | | Paul Ruto | 2 | KEN | 1 | Rovereto | 13-07-1991 |
| 36 | 1.44.94 | | William Tanui | 4 | KEN | 1 | Grosseto | 12-08-1991 |
| 37 | 1.44.95 | 14 | Barnabas Kinyor | | KEN | 2 | Luzern | 06-07-1991 |
| 38 | 1.44.97 | | Paul Ruto | 3 | KEN | 1/B | Zürich | 07-08-1991 |
| 39 | 1.44.97 | | Noureddine Morceli | 3 | ALG | 1 | Cagliari | 17-09-1991 |