1991 Grand Prix of Belgium
25 August - Spa-Francorchamps: 305.360km (6.940km x 44 laps)


Pole Position: Ayrton Senna, McLaren-Honda MP4/6, 1:47.811


Results
 1. Ayrton Senna           McLaren-Honda MP4/6           1:27:17.669 (209.883 km/h)
 2. Gerhard Berger         McLaren-Honda MP4/6          -      1.901
 3. Nelson Piquet          Benetton-Ford B191           -     32.176
 4. Roberto Moreno         Benetton-Ford B191           -     37.310
 5. Riccardo Patrese       Williams-Renault FW14        -     57.187
 6. Mark Blundell          Brabham-Yamaha BT60Y         -   1:40.035
 7. Johnny Herbert         Lotus-Judd 102B              -   1:44.599
 8. Emanuele Pirro         Dallara-Judd 191             -  1 lap
 9. Martin Brundle         Brabham-Yamaha BT60Y         -  1 lap
10. Olivier Grouillard     Fomet-Ford F1                -  1 lap
11. Thierry Boutsen        Ligier-Lamborghini JS35B     -  1 lap
12. Pierluigi Martini      Minardi-Ferrari M191         -  2 laps
13. Andrea de Cesaris      Jordan-Ford 191              -  3 laps (Radiator/Engine)
    
Fastest lap: Roberto Moreno, 1:55.161 (216.948 km/h on lap 40)
    

Retirements    
    J.J. Lehto             Dallara-Judd 191             - 11 laps (Oil pressure)
    Stefano Modena         Tyrrell-Honda 020            - 11 laps (Oil leak/Fire)
    Jean Alesi             Ferrari 643                  - 14 laps (Engine)
    Gianni Morbidelli      Minardi-Ferrari M191         - 15 laps (Clutch)
    Erik Comas             Ligier-Lamborghini JS35B     - 19 laps (Engine)
    Mika Häkkinen          Lotus-Judd 102B              - 19 laps (Engine)
    Nigel Mansell          Williams-Renault FW14        - 22 laps (Electrics)
    Eric Bernard           Lola-Ford L91                - 23 laps (Gearbox)
    Ivan Capelli           Leyton House-Ilmor CG911     - 31 laps (Engine)
    Satoru Nakajima        Tyrrell-Honda 020            - 37 laps (Spun)
    Alain Prost            Ferrari 643                  - 42 laps (Fuel leak)
    Mauricio Gugelmin      Leyton House-Ilmor CG911     - 43 laps (Engine)
    Michael Schumacher     Jordan-Ford 191              - 44 laps (Clutch)
    
Did Not Qualify    
    Aguri Suzuki           Lola-Ford L91
    Nicola Larini          Lamborghini 291
    Alex Caffi             Footwork-Ford FA12
    Eric van de Poele      Lamborghini 291
    
Did Not Pre-qualify    
    Michele Alboreto       Footwork-Ford FA12
    Gabriele Tarquini      AGS-Ford JH25B
    Pedro Chaves           Coloni-Ford C4
    Fabrizio Barbazza      AGS-Ford JH25B


    Race leaders:
    Ayrton Senna            1-14 (14 laps =  97.160 km)
    Nigel Mansell          15-16  (2 laps =  13.880 km)
    Nelson Piquet          17     (1 lap  =   6.940 km)
    Nigel Mansell          18-21  (4 laps =  27.760 km)
    Jean Alesi             22-30  (9 laps =  62.460 km)
    Ayrton Senna           31-44 (14 laps =  97.160 km)
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                                Starting Grid

 1. Ayrton Senna           McLaren-Honda MP4/6           1:47.811 (231.739 km/h)
 2. Alain Prost            Ferrari 643                  -   1.010
 3. Nigel Mansell          Williams-Renault FW14        -   1.017
 4. Gerhard Berger         McLaren-Honda MP4/6          -   1.674
 5. Jean Alesi             Ferrari 643                  -   2.163
 6. Nelson Piquet          Benetton-Ford B191           -   2.729
 7. Michael Schumacher     Jordan-Ford 191              -   3.401
 8. Roberto Moreno         Benetton-Ford B191           -   3.472
 9. Pierluigi Martini      Minardi-Ferrari M191         -   3.488
10. Stefano Modena         Tyrrell-Honda 020            -   3.496
11. Andrea de Cesaris      Jordan-Ford 191              -   4.175
12. Ivan Capelli           Leyton House-Ilmor CG911     -   4.302
13. Mark Blundell          Brabham-Yamaha BT60Y         -   4.566
14. J.J. Lehto             Dallara-Judd 191             -   4.606
15. Mauricio Gugelmin      Leyton House-Ilmor CG911     -   4.812
16. Martin Brundle         Brabham-Yamaha BT60Y         -   4.815
17. Riccardo Patrese       Williams-Renault FW14        -   4.835
18. Thierry Boutsen        Ligier-Lamborghini JS35B     -   4.898
19. Gianni Morbidelli      Minardi-Ferrari M191         -   5.085
20. Eric Bernard           Lola-Ford L91                -   5.498
21. Johnny Herbert         Lotus-Judd 102B              -   5.550
22. Satoru Nakajima        Tyrrell-Honda 020            -   5.683
23. Olivier Grouillard     Fomet-Ford F1                -   5.817
24. Mika Häkkinen          Lotus-Judd 102B              -   5.988
25. Emanuele Pirro         Dallara-Judd 191             -   6.028
26. Erik Comas             Ligier-Lamborghini JS35B     -   6.036

Did Not Qualify
27. Aguri Suzuki           Lola-Ford L91                -   6.058
28. Nicola Larini          Lamborghini 291              -   6.970
29. Alex Caffi             Footwork-Ford FA12           -   9.527
30. Eric van de Poele      Lamborghini 291              -   9.935

Did Not Pre-qualify
31. Michele Alboreto       Footwork-Ford FA12           -  12.099
32. Gabriele Tarquini      AGS-Ford JH25B               -  12.161
33. Pedro Chaves           Coloni-Ford C4               -  14.110
34. Fabrizio Barbazza      AGS-Ford JH25B               -  15.955