Main > Men, 400 m Hurdles > World Championships Records Progression
All records considered statistically valid, but some of them, were unratified for various reasons.
•   - Record was ratified           *   - Record was repeated
 
• 50.44 Andre Phillips USA Helsinki Aug 07, 1983
• 50.12 Aleksandr Kharlov URS Helsinki Aug 07, 1983
• 49.54 Edwin Moses USA Helsinki Aug 07, 1983
• 48.11 Edwin Moses USA Helsinki Aug 08, 1983
• 47.50 Edwin Moses USA Helsinki Aug 09, 1983
• 47.46 Edwin Moses USA Rome Sep 01, 1987
• 47.18 Kevin Young USA Stuttgart Aug 19, 1993
  46.29 Alison Dos Santos BRA Eugene, OR Jul 19, 2022