12-hour race of the Guipúzcoa Grand Prix

  • Date
    22 July 1926
  • Description
    In the 12-hour race for the Grand Prix of Guipúzcoa for Touring Cars in San Sebastián, Spain, Otto Merz, Rudolf Caracciola and Christian Werner score a triple victory to gain the first international success for the Mercedes-Benz 24/100/140 hp K model.