However, it was in
sports car racing, particularly the long distance and endurance events, where Gendebien excelled. Piloting a 2.5-litre Ferrari, Gendebien teamed up with
Maurice Trintignant to place third in the
1956 24 Hours of Le Mans. They were seven laps behind the winners, privateer
Ecurie Ecosse Jaguar drivers
Ron Flockhart and
Ninian Sanderson. The 1958 Grand Prix of
Buenos Aires was a 1,000 kilometre event in which Gendebien paired with
Wolfgang von Trips. They finished second to a fellow Ferrari pairing
Phil Hill and
Peter Collins. In the race Argentine
Maserati driver, Jorge Magnasco, died after his car skidded and turned over. The same year, Gendebien partnered Hill and won the prestigious
24 Hours of Le Mans. Their victory came in a 3-litre Ferrari and secured the
World Sportscar Championship for the Ferrari factory. They covered 2,511 miles with an average speed of 107 miles per hour. Hill became the first American to win the event and their Ferrari was the sole factory-sponsored car running at the end. Ferrari drivers took the first three positions at the conclusion of the
1961 24 Hours of Le Mans and, as they were to be again the following year, Hill and Gendebien were first, averaging 115.89 miles per hour, and establishing a race record. The duo were a natural fit and together they won the Le Mans race three times in total, with Gendebien winning it a fourth time, partnered by fellow Belgian
Paul Frère in . Gendebien's record number of Le Mans victories was not exceeded until , when fellow-Belgian
Jacky Ickx won for the fifth time. Away from
Circuit de la Sarthe, Gendebien also triumphed in the
Targa Florio (1958, '61, '62), the
12 Hours of Sebring (1959, '60, '61), the
12 Hours of Reims (1957, '58) and the
1000 km Nürburgring (1962). In honour of Gendebien's three wins at the 12 Hours of Sebring, turn 15 just before the final corner, onto the Ullman straight is named after him. He also won the
Dolomites Cup, a one-lap sportscar race that took place on a 188-mile circuit in the
Dolomite Mountains in Italy.
Major race victories • Tour of Sicily : 1957 •
Tour de France Automobile : 1957, 1958, 1959 •
Reims 12 Hours : 1957, 1958 •
Targa Florio : 1958, 1961, 1962 •
12 Hours of Sebring : 1959, 1960, 1961 •
24 hours of Le Mans :
1958,
1960,
1961,
1962 •
1000km Nürburgring : 1962 ==Post race life==