Race Result
| GP n. 408 - 19/05/1985 - Grand Prix of Monaco Circuit de Monte Carlo |
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| Winner: | Alain Prost / McLaren-TAG - 1:51'58.034 | ||||||
| Pole Position: | Ayrton Senna / Lotus-Renault - 1:20.450 | ||||||
| Fastest Lap: | Michele Alboreto / Ferrari - 1:22.637 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 2 | McLaren-TAG | 78 | 1:51'58.034 | 5 | 9 | |
| 2 | 27 | Ferrari | 78 | + 7.541 | 3 | 6 | |
| 3 | 11 | Lotus-Renault | 78 | + 1'27.171 | 9 | 4 | |
| 4 | 25 | Ligier-Renault | 77 | + 1 lap | 8 | 3 | |
| 5 | 16 | Renault | 77 | + 1 lap | 10 | 2 | |
| 6 | 26 | Ligier-Renault | 77 | + 1 lap | 16 | 1 | |
| 7 | 5 | Williams-Honda | 77 | + 1 lap | 2 | 0 | |
| 8 | 6 | Williams-Honda | 76 | + 2 laps | 7 | 0 | |
| 9 | 18 | Arrows-BMW | 76 | + 2 laps | 6 | 0 | |
| 10 | 3 | Tyrrell-Ford | 74 | + 4 laps | 18 | 0 | |
| 11 | 30 | Zakspeed | 74 | + 4 laps | 19 | 0 | |
| Ret | 1 | McLaren-TAG | 17 | spun off | 14 | 0 | |
| Ret | 22 | Alfa Romeo | 16 | accident | 12 | 0 | |
| Ret | 7 | Brabham-BMW | 16 | accident | 13 | 0 | |
| Ret | 19 | Toleman-Hart | 16 | turbo | 20 | 0 | |
| Ret | 12 | Lotus-Renault | 13 | engine | 1 | 0 | |
| Ret | 23 | Alfa Romeo | 10 | alternator | 4 | 0 | |
| Ret | 28 | Ferrari | 1 | accident | 15 | 0 | |
| Ret | 17 | Arrows-BMW | 0 | accident | 11 | 0 | |
| Ret | 15 | Renault | 0 | accident | 17 | 0 | |
| Dnq | 8 | Brabham-BMW | did not qualify | 0 | |||
| Dnq | 29 | Minardi-Motori Moderni | did not qualify | 0 | |||
| Dnq | 24 | Osella-Alfa Romeo | did not qualify | 0 | |||
| Dnq | 9 | RAM-Hart | did not qualify | 0 | |||
| Dnq | 10 | RAM-Hart | did not qualify | 0 | |||
| Dnq | 4 | Tyrrell-Ford | did not qualify | 0 | |||