In 1960, Lambert went international, riding in France and Austria. In Austria he participated in the Six Days on an FN 75 cc machine, along with 356 other entrants. After three days, half were gone. He damaged his bike on the fifth day, losing his oil through a blown gasket, and forced to retire. Belgian Television has much archival footage of the 24 hours Austrian event, some of it critical of the levels of exhaustion inflicted on riders, and characterising 24 hours events as "bad sport".