| GP of Italy Monza 8-9-1985, 51 laps of 5.800 m, Total distance 295.800 m | |||||
| Pos | No | Driver | Team-engine | Diff | Reason |
| 1 | 2 | Alain Prost | McLaren-TAG MP4/2B | 1:17:59.451 | - |
| 2 | - | Nelson Piquet | Brabham-BMW BT54 | -51.635 | - |
| 3 | 12 | Ayrton Senna | Lotus-Renault 97T | -1:00.390 | - |
| 4 | - | Marc Surer | Brabham-BMW BT54 | -1:00.609 | - |
| 5 | - | Stefan Johansson | Ferrari 156/85 | -1 lap | - |
| 6 | - | Elio de Angelis | Lotus-Renault 97T | -1 lap | - |
| 7 | - | Patrick Tambay | Renault RE60B | -1 lap | - |
| 8 | - | Martin Brundle | Tyrrell-Renault 014 | -1 lap | - |
| 9 | - | Thierry Boutsen | Arrows-BMW A8 | -1 lap | - |
| 10 | - | Philippe Streiff | Ligier-Renault JS25 | -2 laps | - |
| 11 | 5 | Nigel Mansell | Williams-Honda FW10 | -4 laps | Engine |
| 12 | - | Teo Fabi | Toleman-Hart TG185 | -4 laps | - |
| 13 | - | Michele Alboreto | Ferrari 156/85 | -6 laps | Engine |
| 14 | - | Keke Rosberg | Williams-Honda FW10 | -7 laps | Engine |
| 15 | - | Jacques Laffite | Ligier-Renault JS25 | -11 laps | Engine |
| 16 | 1 | Niki Lauda | McLaren-TAG MP4/2B | -18 laps | Transmission |
| 17 | 22 | Riccardo Patrese | Alfa Romeo 184T | -20 laps | Exaust |
| 18 | - | Huub Rothengatter | Osella-Alfa Romeo FA1G | -25 laps | Engine |
| 19 | - | Philippe Alliot | RAM-Hart 03 | -32 laps | Turbo |
| 20 | - | Gerhard Berger | Arrows-BMW A8 | -38 laps | Engine |
| 21 | - | Derek Warwick | Renault RE60B | -42 laps | Transmission |
| 22 | - | Alan Jones | Lola-Hart THL1 | -45 laps | Unknown |
| 23 | - | Eddie Cheever | Alfa Romeo 184T | -48 laps | Engine |
| 24 | - | Kenny Acheson | RAM-Hart 03 | -49 laps | Clucth |
| 25 | - | Pierluigi Martini | Minardi-Motori Moderni M185 | -51 lap | Fuel pump |
| 26 | - | Piercarlo Ghinzani | Toleman-Hart TG185 | -51 lap | Stalled |