250cc Classification
| Pos | No. | Rider | Manufacturer | Laps | Time/Retired | Grid | Points |
|---|---|---|---|---|---|---|---|
| 1 | 46 | Valentino Rossi | Aprilia | 18 | 38:31.905 | 3 | 25 |
| 2 | 11 | Jürgen Fuchs | Aprilia | 18 | +19.184 | 4 | 20 |
| 3 | 6 | Haruchika Aoki | Honda | 18 | +19.516 | 5 | 16 |
| 4 | 8 | Luis d'Antin | Yamaha | 18 | +21.682 | 21 | 13 |
| 5 | 5 | Tohru Ukawa | Honda | 18 | +21.721 | 6 | 11 |
| 6 | 27 | Sebastián Porto | Aprilia | 18 | +21.927 | 9 | 10 |
| 7 | 7 | Takeshi Tsujimura | Yamaha | 18 | +22.084 | 10 | 9 |
| 8 | 24 | Jason Vincent | TSR-Honda | 18 | +27.290 | 17 | 8 |
| 9 | 37 | Luca Boscoscuro | TSR-Honda | 18 | +33.444 | 15 | 7 |
| 10 | 44 | Roberto Rolfo | TSR-Honda | 18 | +37.467 | 11 | 6 |
| 11 | 12 | Noriyasu Numata | Suzuki | 18 | +42.228 | 12 | 5 |
| 12 | 9 | Jeremy McWilliams | TSR-Honda | 18 | +42.659 | 13 | 4 |
| 13 | 20 | William Costes | Honda | 18 | +50.841 | 16 | 3 |
| 14 | 47 | Ivan Clementi | Yamaha | 18 | +52.029 | 22 | 2 |
| 15 | 16 | Johan Stigefelt | Suzuki | 18 | +53.759 | 20 | 1 |
| 16 | 25 | Yasumasa Hatakeyama | ERP-Honda | 18 | +1:08.503 | 19 | |
| 17 | 14 | Davide Bulega | ERP-Honda | 18 | +1:08.716 | 18 | |
| 18 | 76 | Jarno Janssen | Honda | 18 | +1:21.462 | 24 | |
| 19 | 75 | Maurice Bolwerk | Honda | 18 | +1:21.546 | 23 | |
| 20 | 78 | Rudie Markink | Honda | 18 | +1:44.511 | 25 | |
| 21 | 77 | André Romein | Honda | 18 | +2:11.041 | 26 | |
| Ret | 17 | José Luis Cardoso | Yamaha | 12 | Accident | 14 | |
| Ret | 65 | Loris Capirossi | Aprilia | 9 | Retirement | 1 | |
| Ret | 31 | Tetsuya Harada | Aprilia | 8 | Retirement | 2 | |
| Ret | 19 | Olivier Jacque | Honda | 4 | Accident | 7 | |
| Ret | 4 | Stefano Perugini | Honda | 4 | Accident | 8 | |
| DNS | 18 | Osamu Miyazaki | Yamaha | ||||
| DNQ | 79 | Henk van de Lagemaat | Honda | ||||
| DNQ | 41 | Federico Gartner | Aprilia |
Read more about this topic: 1998 Dutch TT