Grand Prix A.C.F.

Grand Prix was organised by the Automobile Club de France (ACF), of which the first took place in 1906. The circuit used, which was based in Le Mans, was roughly triangular in shape, each lap covering 105 kilometres (65 mi). Six laps were to run each day, and each lap took approximately an hour using the relatively primitive cars of the day.

1906 Winner: Ferenc Szisz (1873–1944) - Renault.