All sub 1'45" performances from 2019
| # | Mark | SR | Athlete | IR | Nat | Pos | Venue | Date |
| 1 | 1.41.89 | 1 | Nijel Amos | | BOT | 1 | Monaco | 12-07-2019 |
| 2 | 1.42.34 | 2 | Donavan Brazier | | USA | 1 | Doha | 01-10-2019 |
| 3 | 1.42.54 | 3 | Ferguson Rotich | | KEN | 2 | Monaco | 12-07-2019 |
| 4 | 1.42.70 | | Donavan Brazier | 2 | USA | 1 | Zürich | 29-08-2019 |
| 5 | 1.42.98 | | Nijel Amos | 2 | BOT | 2 | Zürich | 29-08-2019 |
| 6 | 1.43.11 | 4 | Timothy Cheruiyot | | KEN | 1 | Nairobi | 22-08-2019 |
| 7 | 1.43.14 | | Ferguson Rotich | 2 | KEN | 1 | London | 20-07-2019 |
| 8 | 1.43.47 | 5 | Amel Tuka | | BIH | 2 | Doha | 01-10-2019 |
| 9 | 1.43.48 | 6 | Wyclife Kinyamal | | KEN | 2 | London | 20-07-2019 |
| 10 | 1.43.51 | 7 | Brandon McBride | | CAN | 3 | Zürich | 29-08-2019 |
| 11 | 1.43.62 | | Amel Tuka | 2 | BIH | 3 | Monaco | 12-07-2019 |
| 12 | 1.43.63 | | Donavan Brazier | 3 | USA | 1 | Roma | 06-06-2019 |
| 13 | 1.43.65 | | Nijel Amos | 3 | BOT | 2 | Roma | 06-06-2019 |
| 14 | 1.43.69 | 8 | Emmanuel Korir | | KEN | 4 | Zürich | 29-08-2019 |
| 15 | 1.43.70 | 9 | Michael Saruni | | KEN | 4 | Monaco | 12-07-2019 |
| 16 | 1.43.74 | 10 | Marcin Lewandowski | | POL | 3 | London | 20-07-2019 |
| 17 | 1.43.78 | | Wyclife Kinyamal | 2 | KEN | 1 | Lausanne | 05-07-2019 |
| 18 | 1.43.78 | | Brandon McBride | 2 | CAN | 1 | Paris | 24-08-2019 |
| 19 | 1.43.82 | | Ferguson Rotich | 3 | KEN | 3 | Doha | 01-10-2019 |
| 20 | 1.43.83 | | Brandon McBride | 3 | CAN | 5 | Monaco | 12-07-2019 |
| 21 | 1.43.83 | 11 | Wesley Vázquez | | PUR | 2 | Paris | 24-08-2019 |
| 22 | 1.43.90 | | Brandon McBride | 4 | CAN | 3 | Roma | 06-06-2019 |
| 23 | 1.43.90 | 12 | Cornelius Tuwei | | KEN | 4 | London | 20-07-2019 |
| 24 | 1.43.93 | | Ferguson Rotich | 4 | KEN | 2 | Lausanne | 05-07-2019 |
| 25 | 1.43.94 | 13 | Clayton Murphy | | USA | 5 | Zürich | 29-08-2019 |
| 26 | 1.43.96 | | Wesley Vázquez | 2 | PUR | 1/1 | Doha | 29-09-2019 |
| 27 | 1.43.98i | | Michael Saruni | 2 | KEN | 1 | New York (The Armory) NY | 09-02-2019 |
| 28 | 1.43.99 | | Amel Tuka | 3 | BIH | 6 | Zürich | 29-08-2019 |
| 29 | 1.44.01 | | Emmanuel Korir | 2 | KEN | 3 | Lausanne | 05-07-2019 |
| 30 | 1.44.11 | | Ferguson Rotich | 5 | KEN | 4 | Roma | 06-06-2019 |
| 31 | 1.44.14 | | Brandon McBride | 5 | CAN | 4 | Lausanne | 05-07-2019 |
| 32 | 1.44.20 | | Ferguson Rotich | 6 | KEN | 2/1 | Doha | 29-09-2019 |
| 33 | 1.44.25 | 14 | Marco Arop | | CAN | 1 | Lima | 10-08-2019 |
| 34 | 1.44.25 | 15 | Bryce Hoppel | | USA | 4 | Doha | 01-10-2019 |
| 35 | 1.44.29 | | Nijel Amos | 4 | BOT | 1 | Doha | 03-05-2019 |
| 36 | 1.44.33 | 16 | Abubaker Haydar Abdalla | | QAT | 1 | Doha | 22-04-2019 |
| 37 | 1.44.38 | | Nijel Amos | 5 | BOT | 1 | Nanjing | 21-05-2019 |
| 38 | 1.44.38 | 17 | Ayanleh Souleiman | | DJI | 1 | Barcelona | 17-07-2019 |
| 39 | 1.44.40 | | Wesley Vázquez | 3 | PUR | 6 | Monaco | 12-07-2019 |
| 40 | 1.44.41i | | Donavan Brazier | 4 | USA | 2 | New York (The Armory) NY | 09-02-2019 |
| 41 | 1.44.41 | | Bryce Hoppel | 2 | USA | 1 | Austin TX | 07-06-2019 |
| 42 | 1.44.41 | | Michael Saruni | 3 | KEN | 3 | Paris | 24-08-2019 |
| 43 | 1.44.42 | | Wesley Vázquez | 4 | PUR | 5 | London | 20-07-2019 |
| 44 | 1.44.42 | 18 | Collins Kipruto | | KEN | 1 | Rovereto | 27-08-2019 |
| 45 | 1.44.47 | | Clayton Murphy | 2 | USA | 5 | Lausanne | 05-07-2019 |
| 46 | 1.44.48 | | Bryce Hoppel | 3 | USA | 1 | Azusa CA | 09-07-2019 |
| 47 | 1.44.48 | | Wesley Vázquez | 5 | PUR | 2 | Lima | 10-08-2019 |
| 48 | 1.44.48 | | Clayton Murphy | 3 | USA | 3/1 | Doha | 29-09-2019 |
| 49 | 1.44.48 | | Wesley Vázquez | 6 | PUR | 5 | Doha | 01-10-2019 |
| 50 | 1.44.50 | | Emmanuel Korir | 3 | KEN | 2 | Doha | 03-05-2019 |
| 51 | 1.44.50 | 19 | Jonathan Kitilit | | KEN | 2 | Nairobi | 22-08-2019 |
| 52 | 1.44.50 | 20 | Alfred Kipketer | | KEN | 1 | Madrid | 25-08-2019 |
| 53 | 1.44.52 | 21 | Jamie Webb | | GBR | 6 | London | 20-07-2019 |
| 54 | 1.44.57 | 22 | Alex Kipngetich | | KEN | 1 | Nairobi | 13-09-2019 |
| 55 | 1.44.59 | | Clayton Murphy | 4 | USA | 5 | Roma | 06-06-2019 |
| 56 | 1.44.59 | | Collins Kipruto | 2 | KEN | 4 | Paris | 24-08-2019 |
| 57 | 1.44.61 | 23 | Adam Kszczot | | POL | 7 | London | 20-07-2019 |
| 58 | 1.44.62 | | Emmanuel Korir | 4 | KEN | 2 | Nairobi | 13-09-2019 |
| 59 | 1.44.63 | | Brandon McBride | 6 | CAN | 1 | Montreal | 27-07-2019 |
| 60 | 1.44.63 | | Ferguson Rotich | 7 | KEN | 3 | Nairobi | 13-09-2019 |
| 61 | 1.44.65 | | Wyclife Kinyamal | 3 | KEN | 6 | Roma | 06-06-2019 |
| 62 | 1.44.68 | | Wesley Vázquez | 7 | PUR | 1 | Nashville TN | 31-05-2019 |
| 63 | 1.44.68 | 24 | Craig Engels | | USA | 2 | Azusa CA | 09-07-2019 |
| 64 | 1.44.69 | 25 | Tshepo Tshite | | RSA | 1 | Pretoria | 15-03-2019 |
| 65 | 1.44.69 | | Adam Kszczot | 2 | POL | 7 | Monaco | 12-07-2019 |
| 66 | 1.44.70 | | Donavan Brazier | 5 | USA | 3 | Doha | 03-05-2019 |
| 67 | 1.44.74 | | Adam Kszczot | 3 | POL | 7 | Roma | 06-06-2019 |
| 68 | 1.44.74 | | Cornelius Tuwei | 2 | KEN | 1 | Nairobi | 22-06-2019 |
| 69 | 1.44.74 | | Cornelius Tuwei | 3 | KEN | 1 | Nairobi | 02-07-2019 |
| 70 | 1.44.75 | | Emmanuel Korir | 5 | KEN | 8 | London | 20-07-2019 |
| 71 | 1.44.76 | 26 | Devin Dixon | | USA | 1 | Fayetteville AR | 11-05-2019 |
| 72 | 1.44.78 | | Amel Tuka | 4 | BIH | 1 | Zagreb | 03-09-2019 |
| 73 | 1.44.82 | 27 | Ryan Sanchez | | PUR | 1 | Mayagüez | 27-04-2019 |
| 74 | 1.44.82 | | Abubaker Haydar Abdalla | 2 | QAT | 4 | Doha | 03-05-2019 |
| 75 | 1.44.84 | | Devin Dixon | 2 | USA | 2 | Austin TX | 07-06-2019 |
| 76 | 1.44.87 | | Amel Tuka | 5 | BIH | 6 | Lausanne | 05-07-2019 |
| 77 | 1.44.87 | | Donavan Brazier | 6 | USA | 1/2 | Doha | 29-09-2019 |
| 78 | 1.44.91 | | Cornelius Tuwei | 4 | KEN | 2 | Nanjing | 21-05-2019 |
| 79 | 1.44.93 | | Clayton Murphy | 5 | USA | 5 | Paris | 24-08-2019 |
| 80 | 1.44.95 | | Amel Tuka | 6 | BIH | 1 | Ostrava | 20-06-2019 |
| 81 | 1.44.96 | 28 | Andrés Arroyo | | PUR | 1 | Marietta GA | 17-05-2019 |
| 82 | 1.44.97 | | Jonathan Kitilit | 2 | KEN | 5 | Doha | 03-05-2019 |
| 83 | 1.44.97 | 29 | Kyle Langford | | GBR | 9 | London | 20-07-2019 |
| 84 | 1.44.97 | 30 | Adrián Ben | | ESP | 4/1 | Doha | 29-09-2019 |