World Record Progression of 400 Metres Hurdles
female - U20
| Mark | Wind | Competitor | DOB | Country | Venue | Date |
|---|---|---|---|---|---|---|
| 53.60 | Sydney MCLAUGHLIN | 07 AUG 1999 | USA | Fayetteville, AR (USA) | 27 APR 2018 | |
| 53.82 | Sydney MCLAUGHLIN | 07 AUG 1999 | USA | Sacramento, CA (USA) | 25 JUN 2017 | |
| 54.15 | Sydney MCLAUGHLIN | 07 AUG 1999 | USA | Hayward Field, Eugene, OR (USA) | 10 JUL 2016 | |
| 54.40 | Xing WANG | 30 NOV 1986 | CHN | Nanjing (CHN) | 21 OCT 2005 | |
| 54.70 | Lashinda DEMUS | 10 MAR 1983 | USA | National Stadium, Kingston (JAM) | 19 JUL 2002 | |
| 54.85 | Lashinda DEMUS | 10 MAR 1983 | USA | Baton Rouge, LA (USA) | 31 MAY 2002 | |
| 55.20 | Jana PITTMAN | 09 NOV 1982 | AUS | Pietersburg (RSA) | 18 MAR 2000 | |
| 55.20 | Lesley MAXIE | 04 JAN 1967 | USA | San José (USA) | 09 JUN 1984 |