UNITED STATES GRAND PRIX
500cc · Course
| Pos | Pilote | Temps / écart | Pts |
|---|---|---|---|
| 1 | Eddie Lawson | — | 20 |
| 2 | Wayne Gardner | — | 17 |
| 3 | Niall Mackenzie | — | 15 |
| 4 | Wayne Rainey | — | 13 |
| 5 | Kevin Schwantz | — | 11 |
| 6 | Christian Sarron | — | 10 |
| 7 | Ron Haslam | — | 9 |
| 8 | Didier De Radigues | — | 8 |
| 9 | Rob Mcelnea | — | 7 |
| 10 | Mike Baldwin | — | 6 |
| 11 | Alessandro Valesi | — | 5 |
| — | Shunji Yatsushiro | OUTSTND | |
| — | Raymond Roche | OUTSTND | |
| — | Kevin Magee | OUTSTND | |
| — | John Long | OUTSTND | |
| — | Marco Gentile | OUTSTND | |
| — | Pierfrancesco Chili | OUTSTND | |
| — | Eugene Brown | OUTSTND | |
| — | Patrick Igoa | NOTSTARTED | |
| — | Randy Mamola | NOTSTARTED | |
| — | William Knott | NOTSTARTED | |
| — | Russell Bigley | NOTSTARTED |
250cc · Course
| Pos | Pilote | Temps / écart | Pts |
|---|---|---|---|
| 1 | Jim Filice | 48:22.540 | |
| 2 | Sito Pons | 48:32.380 | |
| 3 | Dominique Sarron | 48:44.230 | |
| 4 | John Kocinski | 48:47.870 | |
| 5 | Bubba Shobert | 48:53.110 | |
| 6 | Luca Cadalora | 48:55.770 | |
| 7 | Jacques Cornu | 49:00.260 | |
| 8 | Anton Mang | 49:00.570 | |
| 9 | Reinhold Roth | 49:14.290 | |
| 10 | Juan Garriga | 49:17.550 | |
| 11 | Bruno Casanova | 49:19.550 | |
| 12 | Loris Reggiani | 49:24.280 | |
| 13 | Jean Philippe Ruggia | 49:31.970 | |
| 14 | August Auinger | 49:32.300 | |
| 15 | Alan Carter | 49:36.370 | |
| 16 | Randy Renfrow | ||
| 17 | Martin Wimmer | ||
| 18 | Donnie Mcleod | ||
| 20 | Jean Michel Mattioli | ||
| 21 | Helmut Bradl | ||
| 23 | Rich Oliver | ||
| 24 | Rene Deláby | ||
| 26 | John Cornwell | ||
| 27 | Luis Lavado | ||
| — | Carlos Cardús | OUTSTND | |
| — | Harald Eckl | OUTSTND | |
| — | Carlos Lavado | OUTSTND | |
| — | Alberto Puig | OUTSTND | |
| — | Paolo Casoli | OUTSTND | |
| — | Urs Lüzi | OUTSTND |