Grands Prix
| Round | Race | Location | 125cc winner | 250cc winner | 500cc winner | Report |
|---|---|---|---|---|---|---|
| 1 | Malaysian Grand Prix | Sepang | Masao Azuma | Loris Capirossi | Kenny Roberts, Jr. | Report |
| 2 | Japanese Grand Prix | Motegi | Masao Azuma | Shinya Nakano | Kenny Roberts, Jr. | Report |
| 3 | Spanish Grand Prix | Jerez | Masao Azuma | Valentino Rossi | Àlex Crivillé | Report |
| 4 | French Grand Prix | Paul Ricard | Roberto Locatelli | Tohru Ukawa | Àlex Crivillé | Report |
| 5 | Italian Grand Prix | Mugello | Roberto Locatelli | Valentino Rossi | Àlex Crivillé | Report |
| 6 | Catalan Grand Prix | Catalunya | Arnaud Vincent | Valentino Rossi | Àlex Crivillé | Report |
| 7 | Dutch TT | Assen | Masao Azuma | Loris Capirossi | Tadayuki Okada | Report |
| 8 | British Grand Prix | Donington | Masao Azuma | Valentino Rossi | Àlex Crivillé | Report |
| 9 | German Grand Prix | Sachsenring | Marco Melandri | Valentino Rossi | Kenny Roberts, Jr. | Report |
| 10 | Czech Republic Grand Prix | Brno | Marco Melandri | Valentino Rossi | Tadayuki Okada | Report |
| 11 | Imola Grand Prix | Imola | Marco Melandri | Loris Capirossi | Àlex Crivillé | Report |
| 12 | Valencia Grand Prix | Valencia | Gianluigi Scalvini | Tohru Ukawa | Régis Laconi | Report |
| 13 | Australian Grand Prix | Phillip Island | Marco Melandri | Valentino Rossi | Tadayuki Okada | Report |
| 14 | South African Grand Prix | Welkom | Gianluigi Scalvini | Valentino Rossi | Max Biaggi | Report |
| 15 | Rio de Janeiro Grand Prix | Rio de Janeiro | Noboru Ueda | Valentino Rossi | Norifumi Abe | Report |
| 16 | Argentine Grand Prix | Buenos Aires | Marco Melandri | Olivier Jacque | Kenny Roberts, Jr. | Report |
Read more about this topic: 1999 Grand Prix Motorcycle Racing Season