1931 Grand Prix de Geneve
7 June - Geneve: 9.300 km
3 heats of 16 laps (148,800 km) + final of 27 laps (223,200 km)
Results: Heat 1: Voiturettes, 16 laps 148,800 km 1 Pierre Veyron Bugatti T37A 1:09.37.8 2 Edoard Roux Bugatti T37A 1:11.06.0 3 Hans Kessler Alfa-Romeo 6C-1500 1:12.58.8 4 Avondet Bugatti T37A 1:15.02.0 5 Giovanni Lurani Alfa-Romeo 6C-1500 1:19.29.0 6 J-P Wimille Bugatti T37A 1:20.00.0 7 Mikael Angwerd Bugatti T37A 1:26.24.0 Retirements: J Gaupillat Bugatti T37A 4 Heat 2: 2000cc 148,800 km/ 92.460 miles (128,769 kmh/ 80,014 mph) 1 J de Maleplane Bugatti T35C 1:09.20.0 2 Minangoy Bugatti T35C 1:11.01.0 3 Sergio Rusca Alfa-Romeo 6C-1750 1:18.36.0 4 Francesco Pirola Alfa-Romeo 6C-1750 1:20.19.0 Heat 3: +2000cc 148,800 km 1 Marcel Lehoux Bugatti T51 1:05.07.0 2 J. Lumachi Bugatti T35B 1:07.20.0 3 Fritz Caflisch Mercedes-Benz SSK 1:12.42.8 4 Umberto Klinger Maserati 26M (8C-2500) 1:14.40.0 Retirements: Stanislas Czaykowski Bugatti T51 Final: 223,200 km 1 Marcel Lehoux Bugatti T51 1:47.42.0 2 Giovanni Lumachi Bugatti T35B 1:52.59.0 3 Fritz Caflisch Mercedes-Benz SSK 2:01.16.0 4 Hans Kessler Alfa-Romeo 6C-1500 2:04.00.4 5 Francesco Pirola Alfa-Romeo 6C-1750 2:05.24.0 6 Minangoy Bugatti T35C Retirements: Stanislas Czaykowski Bugatti T51 Jean de de Maleplane Bugatti T35C Umberto Klinger Maserati 26M (8C-2500) Pierre Veyron Bugatti T37A Sergio Rusca Alfa-Romeo 6C-1750 Edoard Roux Bugatti T37A Race notes: 1) It is not quite known what the qualification rules for the final were for Czaykowski should not have really been there.