250 Cc Classification
| Pos | Rider | Manufacturer | Laps | Time | Grid | Points |
|---|---|---|---|---|---|---|
| 1 | Luca Cadalora | Honda | 20 | 45:23.048 | 8 | 20 |
| 2 | Carlos Cardús | Honda | 20 | +0.255 | 2 | 17 |
| 3 | Wilco Zeelenberg | Honda | 20 | +17.876 | 1 | 15 |
| 4 | Masumitsu Taguchi | Honda | 20 | +21.180 | 9 | 13 |
| 5 | Nobuatsu Aoki | Honda | 20 | +21.560 | 11 | 11 |
| 6 | Tetsuya Harada | Yamaha | 20 | +21.570 | 3 | 10 |
| 7 | Helmut Bradl | Honda | 20 | +22.060 | 6 | 9 |
| 8 | Masahiro Shimizu | Honda | 20 | +23.103 | 8 | |
| 9 | Loris Reggiani | Aprilia | 20 | +31.920 | 15 | 7 |
| 10 | Tsutomu Udagawa | Honda | 20 | +37.366 | 4 | 6 |
| 11 | Katsuyoshi Kozono | Honda | 20 | +37.953 | 7 | 5 |
| 12 | Kyoji Namba | Yamaha | 20 | +40.569 | 12 | 4 |
| 13 | Jochen Schmid | Honda | 20 | +56.684 | 3 | |
| 14 | Martin Wimmer | Suzuki | 20 | +56.734 | 10 | 2 |
| 15 | Toshiyuki Arakaki | Honda | 20 | +57.140 | 1 | |
| 16 | Osamu Miyazaki | Yamaha | 20 | +58.962 | ||
| 17 | Pierfrancesco Chili | Aprilia | 20 | +1:00.083 | 13 | |
| 18 | Jean-Pierre Jeandat | Honda | 20 | +1:03.334 | ||
| 19 | Andreas Preining | Aprilia | 20 | +1:08.539 | ||
| 20 | Stefan Prein | Honda | 20 | +1:10.775 | ||
| 21 | Alberto Puig | Yamaha | 20 | +1:31.053 | ||
| 22 | Takehiko Kurokawa | Honda | 20 | +1:34.951 | ||
| 23 | Leon van der Heyden | Honda | 20 | +1:35.323 | ||
| 24 | Yoshomasa Kato | Yamaha | 20 | +1:38.026 | ||
| 25 | Carlos Lavado | Yamaha | 20 | +1:41.074 | ||
| 26 | Paolo Casoli | Yamaha | 20 | +1:48.765 | ||
| 27 | Urs Jucker | Yamaha | 20 | +2:07.587 | ||
| 28 | Peter Linden | Honda | 20 | +2:10.769 | ||
| 29 | Kevin Mitchell | Yamaha | 20 | +2:13.523 | ||
| 30 | Frédéric Protat | Aprilia | 20 | +2:13.687 | ||
| 31 | Jim Filice | Yamaha | 19 | +1 lap | ||
| 32 | Bernard Hänggeli | Aprilia | 19 | +1 lap | ||
| Ret | Hiroyuki Yamagishi | Honda | 18 | Retired | ||
| Ret | Jaime Mariano | Aprilia | 16 | Retired | ||
| Ret | Àlex Crivillé | Honda | 13 | Retired | 14 | |
| Ret | Corrado Catalano | Honda | 6 | Retired | ||
| Ret | Tadayuki Okada | Honda | 5 | Retired | 5 | |
| Ret | Doriano Romboni | Honda | 1 | Retired | ||
Read more about this topic: 1991 Japanese Motorcycle Grand Prix