| Order / Lane | Bib | ATHLETE | COUNTRY | PB | SB 1999 | 
|---|---|---|---|---|---|
| 1 | 168 | Tristan Anthony |  GBR | 53.08 | 53.08 | 
| 2 | 296 | Vincent Mumo Kiilu |  KEN | 52.67 | 52.67 | 
| 3 | 14 | Sean Avery |  AUS | 52.64 | 52.64 | 
| 4 | 109 | Sergio Hierrezuelo |  CUB | 50.91 | 50.91 | 
| 5 | 490 | Mikhail Lipskiy |  RUS | 53.07 | 53.07 | 
| 6 | 468 | Marnus Kritzinger |  RSA | 51.81 | 51.81 | 
| 7 | 484 | Alexandr Borshchenko |  RUS | 53.12 | 53.12 | 
| 8 | 171 | Jeffrey Christie |  GBR | 53.14 | 53.14 |