Grands Prix
| Round | Date | Race | Location | 125cc winner | 250cc winner | MotoGP winner | Report |
|---|---|---|---|---|---|---|---|
| 1 | April 10 | Spanish Grand Prix | Jerez | Marco Simoncelli | Dani Pedrosa | Valentino Rossi | Report |
| 2 | April 17 | Portuguese Grand Prix | Estoril | Mika Kallio | Casey Stoner | Alex Barros | Report |
| 3 | May 1 | Chinese Grand Prix | Shanghai | Mattia Pasini | Casey Stoner | Valentino Rossi | Report |
| 4 | May 15 | French Grand Prix | Le Mans | Thomas Lüthi | Dani Pedrosa | Valentino Rossi | Report |
| 5 | June 5 | Italian Grand Prix | Mugello | Gábor Talmácsi | Dani Pedrosa | Valentino Rossi | Report |
| 6 | June 12 | Catalan Grand Prix | Catalunya | Mattia Pasini | Dani Pedrosa | Valentino Rossi | Report |
| 7 | June 25 | Dutch TT | Assen | Gábor Talmácsi | Sebastián Porto | Valentino Rossi | Report |
| 8 | July 10 | United States Grand Prix | Laguna Seca | No 125cc and 250cc race | Nicky Hayden | Report | |
| 9 | July 24 | British Grand Prix | Donington Park | Julián Simón | Randy de Puniet | Valentino Rossi | Report |
| 10 | July 31 | German Grand Prix | Sachsenring | Mika Kallio | Dani Pedrosa | Valentino Rossi | Report |
| 11 | August 20 | Czech Republic Grand Prix | Brno | Thomas Lüthi | Dani Pedrosa | Valentino Rossi | Report |
| 12 | September 18 | Japanese Grand Prix | Motegi | Mika Kallio | Hiroshi Aoyama | Loris Capirossi | Report |
| 13 | September 25 | Malaysian Grand Prix | Sepang | Thomas Lüthi | Casey Stoner | Loris Capirossi | Report |
| 14 | October 1 | Qatar Grand Prix | Losail | Gábor Talmácsi | Casey Stoner | Valentino Rossi | Report |
| 15 | October 16 | Australian Grand Prix | Philip Island | Thomas Lüthi | Dani Pedrosa | Valentino Rossi | Report |
| 16 | October 23 | Turkish Grand Prix | Istanbul | Mike Di Meglio | Casey Stoner | Marco Melandri | Report |
| 17 | November 6 | Valencian Grand Prix | Valencia | Mika Kallio | Dani Pedrosa | Marco Melandri | Report |
Read more about this topic: 2005 Grand Prix Motorcycle Racing Season