Competitors for 2009 World Duathlon Championships
| Athlete | Country | Sports | Date of birth |
|---|---|---|---|
| Ana Burgos |  ESP |
TRI | 26 December 1967 |
| Carlos Chávez |  MEX |
TRI | 1990 |
| Sophie Coleman |  GBR |
TRI | 12 August 1990 |
| Jurgen Dereere |  BEL |
TRI | 1972 |
| Damien Derobert |  FRA |
TRI | 9 May 1981 |
| Antoine Duvivier | BEL |
TRI | 24 December 1986 |
| Alessandro Fabian |  ITA |
TRI | 7 January 1988 |
| Vendula Frintová |  CZE |
TRI | 4 September 1983 |
| Vicky Graves | GBR |
TRI | 1990 |
| Yevgeniya Koshelnikova-Sukhoruchenkova |  RUS |
TRI | 25 September 1986 |
| Kinga Lauf |  HUN |
TRI | 17 May 1986 |
| Sandra Lévénez | FRA |
ATH/CYC/TRI | 5 July 1979 |
| Mario Mola | ESP |
TRI | 23 February 1990 |
| Jarrod Shoemaker |  USA |
TRI | 17 July 1982 |
| Tiago Silva |  POR |
TRI | 1998 |
| Marjon van der Wansem |  NED |
TRI | 1991 |
| Lukas Verzbicas | USA |
TRI | 6 January 1993 |