Info
| Last name | Demarbaix |
| First name | Sebastien |
| Nationality |  Belgium |
| Date of birth | 19-12-1973 |
| Age | 52 |
| Place of birth | Lessines |
About Sebastien Demarbaix
Sebastien Demarbaix is a Belgian professional cyclist, 52 years old. Turned professional in 1996. Active in road cycling.
Monuments
| Date | Rank | Race |
|---|---|---|
| 09-05 | 18 | Grand Prix de Wallonie (1.2) |
| 01-05 | 6 |  Trophée des Grimpeurs (1.3) |
| 24-04 | 49 | Grote Scheldeprijs - Schoten (1.1) |
| 31-03 | 40 | De Brabantse Pijl (1.2) |
| 05-02 | 17 | GP d'Ouverture La Marseillaise (1.3) |