Jan Pijnenburg

Johannes "Jan" Baptist Norbertus Pijnenburg was a Dutch track cyclist who competed in the 1928 Summer Olympics. He won the silver medal as part of the Dutch pursuit team. After the Olympics he turned professional and won six-day races in Dortmund, Berlin (1931), Amsterdam, Brussels (1932–1934), Paris, Chicago (1932), Frankfurt (1933), Stuttgart (1933), Antwerp, Rotterdam (1936) and Copenhagen (1936).