High Quality Content by WIKIPEDIA articles! The 1978 Belgian motorcycle Grand Prix was the seventh round of the 1978 Grand Prix motorcycle racing season. It took place on July 2, 1978 at the Circuit de Spa-Francorchamps. These races, along with the Spa 24 Hours touring car race 3 weeks later were the last ever international major events held on the old 14 kilometer Spa-Francorchamps circuit.