The 1986 San Marino motorcycle Grand Prix was the eleventh race of the 1986 Grand Prix motorcycle racing season. It took place on 22–24 August 1986 at the Circuito Internazionale Santa Monica.

Classification 500 cc Pos. Rider Team Manufacturer Time/Retired Points 1 Eddie Lawson Marlboro Yamaha Team Agostini Yamaha 47'30.830 15 2 Wayne Gardner Rothmans Team HRC Honda +9.870 12 3 Randy Mamola Team Lucky Strike Roberts Yamaha +18.960 10 4 Mike Baldwin Team Lucky Strike Roberts Yamaha +20.740 8 5 Raymond Roche Racing Team Katayama Honda +37.660 6 6 Christian Sarron Team Gauloises Blondes Yamaha Yamaha +41.290 5 7 Didier de Radiguès Rollstar Honda Racing Team Honda +42.840 4 8 Niall Mackenzie Skoal Bandit Heron Suzuki Suzuki +50.980 3 9 Ron Haslam Team ROC Honda +1'04.280 2 10 Kevin Schwantz Suzuki +1 lap 1 11 Shunji Yatsushiro Team HRC Honda +1 lap 12 Leandro Beccheroni Suzuki +1 lap 13 Wolfgang Von Muralt Frankonia-Suzuki Suzuki +1 lap 14 Vittorio Gibertini Cagiva +1 lap 15 Christian Le Liard Team ROC Honda +1 lap 16 Andreas Leuthe Honda +1 lap 17 Fabio Barchitta Honda +1 lap 18 Boet van Dulmen Honda +1 lap 19 Manfred Fischer Team Hein Gericke Honda +2 laps 20 Karl Truchsess Honda +2 laps 21 Vinicio Bogani Honda +2 laps 22 Eero Hyvärinen Honda +2 laps 23 Mile Pajic Stichting Netherlands Racing Team Honda +2 laps 24 Marco Greco Honda +2 laps Ret Simon Buckmaster Honda Retired Ret Juan Garriga Cagiva Retired Ret Dave Petersen HB Suzuki GP Team Suzuki Retired Ret Marco Marchesani Suzuki Retired Ret Armando Errico Suzuki Retired Ret Fabio Biliotti Team Italia Honda Retired Ret Alessandro Valesi Honda Retired Ret Vittorio Scatola Team Paton Paton Retired Ret Rob McElnea Marlboro Yamaha Team Agostini Yamaha Accident Ret Paul Lewis Skoal Bandit Heron Suzuki Suzuki Retired Ret Marco Gentile Fior Fior Retired DNS Massimo Messere Suzuki Did not start DNQ Henk van der Mark Honda Did not qualify DNQ Christopher Bürki Honda Did not qualify DNQ Claus Wulff Suzuki Did not qualify DNQ Andres Perez Rubio Suzuki Did not qualify DNQ Josef Doppler HRC Grieskirched Honda Did not qualify DNQ Dietmar Marehardt Honda Did not qualify DNQ Stelio Marmaras Suzuki Did not qualify Sources:

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