1923 Gran Premio do San Sebastian Cyclecars
29 July - San Sebastian: 26 laps x 17.815 km = 463.19 km

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

Results:

  1 Ramon Bueno          Salmson GP                       5:39.16  
  2 Robert Benoist       Salmson GP                       5:39.16
  3 Eugène Mauve         Mauve Anzani                          26
  4 Joaquin Palazon      Senechal GS Ruby                 6:06.00   750cc

Did Not Finish:

    Del Rio              SARA                                       750cc
    Lucien Desvaux       Salmson GP                    
    Patricio Satrustegui EHP Ruby
    Lucien Erb           SARA                                       750cc
    Sierra               BNC Ruby