24 Hours of Le Mans: Patrick Depailler / Jacques Laffite, Equipe Renault Elf, Renault Alpine A442 leads Patrick Tambay / Jean-Pierre Jaussaud, Equipe Renault Elf, Renault Alpine A442 and Jürgen Barth / Hurley Haywood / Jacky Ickx, Martini Racing Porsche System, Porsche 936/77
Patrick Depailler / Jacques Laffite, Equipe Renault Elf, Renault Alpine A442 leads Patrick Tambay / Jean-Pierre Jaussaud, Equipe Renault Elf, Renault Alpine A442 and Jürgen Barth / Hurley Haywood / Jacky Ickx, Martini Racing Porsche System, Porsche 936/77