Info
| Last name | Silloniz Aresti |
| First name | Aitor |
| Nationality |  Spain |
| Date of birth | 17-02-1977 |
| Age | 49 |
| Place of birth | Berna |
Monuments
Grand tours
| Year | Giro d'Italia | Tour de France | Vuelta a España |
|---|---|---|---|
| 2004 | - | - | 118th |
| Date | Rank | Race | |
|---|---|---|---|
| Volta Ciclista a Catalunya (PT) | |||
| 21-05 | OTL | Stage 6Llívia - Pallejá (198.0km) | |
| 20-05 | 141 | Stage 5Sornas - Ordino-Arcalís (17.0km) | |
| 19-05 | 138 | Stage 4Perafort - Andorra (237.0km) | |
| 18-05 | 148 | Stage 3Salou - Granada (157.0km) | |
| 17-05 | 109 | Stage 2Cambrils - Cambrils (186.0km) | |
| 16-05 | 18 | Stage 1Salou - Salou (19.0km) | |
 Tour de Romandie (PT) | |||
| 99 |  Standings | ||
| 01-05 | 111 | Stage 5Lausanne - Lausanne (20.0km) | |
| 30-04 | 87 | Stage 4Châtel-Saint-Denis - Les Paccots (150.0km) | |
| 29-04 | 118 | Stage 3Aigle - Anzère (146.0km) | |
| 28-04 | 61 | Stage 2Fleurier - Fleurier (171.0km) | |
| 27-04 | 69 | Stage 1Avenches - Avenches (166.0km) | |
| 26-04 | 144 | PrologueGenève - Genève (3.0km) | |
| 10-04 | DNF |  Paris-Roubaix (PT) | |
| 03-04 | DNF |  Ronde van Vlaanderen (PT) | |