| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Suzuka | 2003.04.06 | Aprilia |  Abruzzo Racing Team | |
| 2 |  Phakisa | 2003.04.27 | Honda | Telefonica MoviStar Jnr Team | |
| 3 |  Jerez | 2003.05.11 | Aprilia | Safilo Oxydo-LCR | |
| 4 |  Le Mans | 2003.05.25 | Honda | Telefonica MoviStar Jnr Team | |
| 5 |  Mugello | 2003.06.08 | Aprilia | Safilo Oxydo-LCR | |
| 6 |  Catalunya | 2003.06.15 | Honda | Telefonica MoviStar Jnr Team | |
| 7 |  Assen | 2003.06.28 | Aprilia | Exalt Cycle Red Devil | |
| 8 |  Donington Park | 2003.07.13 | Aprilia | Master MX Onda Aspar Team | |
| 9 |  Sachsenring | 2003.07.27 | Aprilia | Abruzzo Racing Team | |
| 10 |  Brno | 2003.08.17 | Honda | Telefonica MoviStar Jnr Team | |
| 11 |  Estoril | 2003.09.07 | Aprilia | Master MX Onda - Aspar Team | |
| 12 |  Jacarepaguá | 2003.09.20 | Derbi | Caja Madrid Derbi Racing | |
| 13 | Motegi | 2003.10.05 | Aprilia | Master MX Onda Aspar Team | |
| 14 |  Sepang | 2003.10.12 | Honda | Telefonica MoviStar Jnr Team | |
| 15 |  Phillip Island | 2003.10.19 | Honda |  Ajo Motorsport | |
| 16 |  Valencia | 2003.11.02 | Aprilia | Safilo Oxydo-LCR |