Competitors for 2003 Marathon London
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Gezahegne Abera |  ETH |
ATH | 23 April 1978 |
| Stefano Baldini |  ITA |
ATH | 25 May 1971 |
| Deena Drossin-Kastor |  USA |
ATH | 14 February 1973 |
| Catherine Ndereba |  KEN |
ATH | 21 July 1972 |
| Joseph Ngolepus | KEN |
ATH | 10 April 1975 |
| Paula Radcliffe |  ENG GBR |
ATH | 17 December 1973 |