| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Phakisa | 2004.04.18 | Honda RS-W |  Telefonica MoviStar Honda 250cc | |
| 2 |  Jerez | 2004.05.02 | Honda RS-W | Fortuna Honda | |
| 3 |  Le Mans | 2004.05.16 | Honda RS-W | Telefonica MoviStar Honda 250cc | |
| 4 |  Mugello | 2004.06.06 | Aprilia RSW | Repsol - Aspar Team 250cc | |
| 5 |  Catalunya | 2004.06.13 | Aprilia RSW | Safilo Carrera - LCR | |
| 6 |  Assen | 2004.06.26 | Aprilia RSW | Repsol - Aspar Team 250cc | |
| 7 |  Jacarepaguá | 2004.07.04 | Aprilia RSW | MS Aprilia Team | |
| 8 |  Sachsenring | 2004.07.18 | Honda RS-W | Telefonica MoviStar Honda 250cc | |
| 9 |  Donington Park | 2004.07.25 | Honda RS-W | Telefonica MoviStar Honda 250cc | |
| 10 |  Brno | 2004.08.22 | Aprilia RSW | Repsol - Aspar Team 250cc | |
| 11 |  Estoril | 2004.09.05 | Honda RS-W | Fortuna Honda | |
| 12 |  Motegi | 2004.09.18 | Honda RS-W | Telefonica MoviStar Honda 250cc | |
| 13 |  Losail Grand Prix Kataru | 2004.10.02 | Aprilia RSW | Repsol - Aspar Team 250cc | |
| 14 |  Sepang | 2004.10.10 | Honda RS-W | Telefonica MoviStar Honda 250cc | |
| 15 |  Phillip Island | 2004.10.17 | Aprilia RSW | Repsol - Aspar Team 250cc | |
| 16 |  Valencia | 2004.10.31 | Honda RS-W | Telefonica MoviStar Honda 250cc |
