during the
1000 km of Nürburgring in 1974. Van Lennep drove for the
Porsche sportscar team beginning in 1967. He shared the number 22
Martini Racing Porsche 917K with
Helmut Marko, winning the
24 Hours of Le Mans in
1971. They set a distance record, covering , which remained unbeaten until 2010. Also in 1971, the
Stichting Autoraces Nederland (Foundation for Car races in the Netherlands) hired a
Surtees TS7 for van Lennep to make his F1 debut in his home GP where he finished a creditable eighth in a very wet GP. The following year Van Lennep won the
1972 Rothmans European Formula 5000 Championship driving a
Surtees TS11 and a
McLaren M18. He also drove twice for the
Williams GP team, earning his first World Championship point with sixth place in the
1973 Dutch Grand Prix. With
Ensign, he scored a second point in the
1975 German Grand Prix, making him the fifth most successful Dutch Formula One driver behind
Max Verstappen,
Jos Verstappen,
Carel Godin de Beaufort and
Christijan Albers. In 1973, van Lennep won the last
Targa Florio, sharing the Martini
Porsche Carrera RSR with
Herbert Müller. He continued with
sportscar racing, sharing a
Porsche 936 Turbo with
Jacky Ickx to win Le Mans 24 for a second time in
1976, before retiring from racing. ==Racing record==