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                          | SIMULATION:
I
                              TOOK OFF ALL RECORDS SET IN THE EIGHTIES THAT WERE UNBEATEN UNTIL THE YEAR 2000.
 THESE RECORDS ARE REPLACED BY THE SECOND BEST
                              PERFORMANCE EVER.
 CHINESE ATHLETES: MARKS MADE OUTSIDE CHINA ONLY.
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                          | Age | Time | Name and Surname | Nat | Year of birth | Year of record | See Chronology(click on the icon)
 | In the West(click on the icon)
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                          | 18 | 3:59.43 
 | Same
                              age record but different chronology.
 
 
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                          | 19 | 3:56.98 3:59.43
 
 | Same
                              age record but different chronology.
 
 
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                          | 20 | 3:56.28 
 | Same
                              age record but different chronology.
 
 
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                          | 21 | 3:56.79 | Same age record and same
                            chronology.
 
 
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                          | 22 | 3:56.05 | Same
                              age record but different chronology.
 
 
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                          | 23 | 3:55.20 | Same age record and same
                            chronology.
 
 
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                          | 24 | 3:50.07 | 
                              
 Same age record
                                but different chronology. 
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                          | 25 | 3:54.21 | Gudaf Tsegay | ETH | 1997 | 2022 |  |  | 
                       
                          | 26 | 3:51.95 | Same
                              age record but different chronology. |   |   | 
                        
                          | 27 | 3:51.07 | Same
                              age record but different chronology. |   |   | 
                        
                          | 28 | 3:50.37 | Same
                              age record but different chronology. |   |   | 
                        
                          | 29 | 3:55.28 | Laura Muir | GB | 1993 | 2022 |  | 
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                          | 30 | 3:56.63 | 
                              
 Same age record
                                but different chronology. 
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                          | 31 | 3:55.87 | See main page | 
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                          | 32 | 3:56.92 | Linden Hall | AUS | 1991 | 2023 |  |  | 
                        
                          | 33 | 3:58.42 | Same
                              age record but different chronology. |  | 
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                          | 34 | 3:57.90 | Kelly Holmes | GB | 1970 | 2004 |  |  | 
                        
                          | 35 | 3:58.29 | Violeta Szekely | ROM | 1965 | 2000 |  |  | 
                        
                          | 36 | 3:59.35 | Same age record but different chronology. |  |  | 
                        
                          | 37 | 3:59.71 | See main page | 
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