Race Result
| GP n. 425 - 25/05/1986 - Grand Prix of Belgium Circuit National de Francorchamps |
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| Winner: | Nigel Mansell / Williams-Honda - 1:27'57.925 | ||||||
| Pole Position: | Nelson Piquet / Williams-Honda - 1:54.331 | ||||||
| Fastest Lap: | Alain Prost / McLaren-TAG - 1:59.282 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 5 | Williams-Honda | 43 | 1:27'57.925 | 5 | 9 | |
| 2 | 12 | Lotus-Renault | 43 | +19.827 | 4 | 6 | |
| 3 | 28 | Ferrari | 43 | +23.592 | 11 | 4 | |
| 4 | 27 | Ferrari | 43 | +29.634 | 9 | 3 | |
| 5 | 26 | Ligier-Renault | 43 | + 1'10.690 | 17 | 2 | |
| 6 | 1 | McLaren-TAG | 43 | + 2'17.772 | 3 | 1 | |
| 7 | 19 | Benetton-BMW | 42 | + 1 lap | 6 | 0 | |
| 8 | 7 | Brabham-BMW | 42 | + 1 lap | 15 | 0 | |
| 9 | 17 | Arrows-BMW | 41 | + 2 laps | 21 | 0 | |
| 10 | 20 | Benetton-BMW | 41 | + 2 laps | 2 | 0 | |
| 11 | 15 | Lola-Ford | 40 | out of fuel | 16 | 0 | |
| 12 | 4 | Tyrrell-Renault | 40 | + 3 laps | 18 | 0 | |
| 13 | 14 | Zakspeed | 37 | + 6 laps | 20 | 0 | |
| Ret | 23 | Minardi-Motori Moderni | 35 | out of fuel | 19 | 0 | |
| Ret | 3 | Tyrrell-Renault | 25 | gearbox | 12 | 0 | |
| Ret | 29 | Zakspeed | 25 | electrical | 23 | 0 | |
| Ret | 24 | Minardi-Motori Moderni | 24 | gear box | 22 | 0 | |
| Ret | 25 | Ligier-Renault | 23 | engine | 7 | 0 | |
| Ret | 6 | Williams-Honda | 16 | turbo | 1 | 0 | |
| Ret | 18 | Arrows-BMW | 7 | electrical | 14 | 0 | |
| Ret | 11 | Lotus-Renault | 7 | spun off | 13 | 0 | |
| Ret | 2 | McLaren-TAG | 6 | engine | 8 | 0 | |
| Ret | 21 | Osella-Alfa Romeo | 3 | engine | 24 | 0 | |
| Ret | 22 | Osella-Alfa Romeo | 2 | engine | 25 | 0 | |
| Ret | 16 | Lola-Ford | 0 | accident | 10 | 0 | |