1923 Grand Prix de Boulogne
1 September - Boulogne circuit: 12 laps x 37.375 km = 448.500 km

 Pole Position: N/A
 Fastest Lap: N/A

Results:

  1 Robert Benoist        Salmson GP                      4:26.27.4 
  2 Ramon Bueno           Salmson GP                      4:42.29.2  
  3 E. Ringwood           GN                              4:58.08.8
  4 Archie Frazer-Nash    GN                              5:07.28.2
  5 L. Cushman            GN                              5:26.57.2 
  6 Robert Senechal       Senechal GS Ruby                5:29.01.0  750cc

Did Not Finish:

    Georges Casse         Salmson GP                            9          
    Cutler                Austin 7                              7  Big end  750cc
    Louis Kings           Austin 7                              3  Crash    750cc
    Arthur Waite          Austin 7                              1  Big end  750cc
    Hugh Eaton            GN                                    1          
    Duforest              Ready                                 0  Crash    750cc