| Runda | Tor | Data | Kierowca | Pojazd | Zespół |
|---|---|---|---|---|---|
| 1 |  Suzuka | 1990.03.25 | Yamaha YZR250 |  | |
| 2 |  Laguna Seca | 1990.04.08 | Yamaha YZR250 | | |
| 3 |  Jerez | 1990.05.06 | Yamaha YZR250 | | |
| 4 |  Misano | 1990.05.20 | Yamaha YZR250 | | |
| 5 |  Nürburgring | 1990.05.27 | Honda NSR250 | | |
| 6 |  Salzburgring | 1990.06.10 | Yamaha YZR250 | | |
| 7 |  Rijeka | 1990.06.17 | Honda NSR250 | | |
| 8 |  Assen | 1990.06.30 | Yamaha YZR250 | | |
| 9 |  Spa-Francorchamps | 1990.07.07 | Yamaha YZR250 | | |
| 10 |  Le Mans | 1990.07.22 | Honda NSR250 | | |
| 11 |  Donington Park | 1990.08.05 | Yamaha YZR250 | | |
| 12 |  Anderstorp | 1990.08.12 | Honda NSR250 | | |
| 13 |  Brno | 1990.08.26 | Honda NSR250 | | |
| 14 |  Hungaroring | 1990.09.02 | Yamaha YZR250 | | |
| 15 |  Phillip Island | 1990.09.16 | Yamaha YZR250 | |