Grelha de partida
| A Negro O piloto que efectuou o melhor tempo nos treinos, em itálico o piloto que iniciou a corrida |
| Linha 1 | 5 - Martini Racing Team Jacky Ickx/Henri Pescarolo/Jochen Mass Porsche 936/78 - 3:27.06 (236.532 km/h) | 1 - Renault Sport Jean-Pierre Jabouille/Patrick Depailler Renault Alpine A443 - 3:28.4 (235.624 km/h) |
| Linha 2 | 43 - Martini Racing Porsche System Manfred Schurti/Rolf Stommelen Porsche 935/78 Turbo - 3:30.9 (232.831 km/h) | 6 - Martini Racing Team Jurgen Barth/Bob Wollek/Jacky Ickx Porsche 936/78 - 3:35.2 (228.178 km/h) |
| Linha 3 | 2 - Renault Sport Didier Pironi/Jean-Pierre Jaussaud Renault Alpine A442-B "Bubble top" - 3:35.7 (227.650 km/h) | 7 - Martini Racing Team Hurley Haywood/Peter Gregg/Reinhold Joest Porsche 936/77 - 3:37.3 (225.973 km/h) |
| Linha 4 | 3 - Renault Sport Derek Bell/Jean-Pierre Jarier Renault Alpine A442-A - 3:37.9 (225.351 km/h) | 4 - Ecurie Calberson Jean Ragnoti/Guy Frequelin/Jose Dolhem/Jean-Pierre Jabouille Renault Alpine A442-A - 3:42.7 (220.494 km/h) |
| Linha 5 | 10 - Grand Touring Cars Inc Vern Schuppan/Jacques Laffite/Sam Posey Mirage M 9 Renault - 3:45.8 (217.467 km/h) | 8 - Alain de Cadenet Alain de Cadenet/Chris Craft De Cadenet T 380 Ford - 3:46.2 (217.082 km/h) |
| Linha 6 | 47 - Weisberg Gelo Racing Team John Fitzpatrick/Toine Hezemans Porsche 935/76 A Turbo - 3:46.5 (216.795 km/h) | 11 - Grand Touring Cars Inc Sam Posey/Michel Leclere Mirage M 9 Renault - 3:48.3 (215.085 km/h) |
| Linha 7 | 19 - IBEC Racing Developments Ltd. Guy Edwards/Ian Grob Ibec IBH1 P6 (Hesketh) Ford - 3:50.2 (213.310 km/h) | 44 - Porsche Kremer Racing Jim Busby/Chris Cord/Rick Knoop Porsche 935/77 A Turbo - 3:50.7 (212.848 km/h) |
| Linha 8 | 12 - Simon Phillips Racing with BATCO France Nick Faure/John Beasley/Simon Phillips/Martin Raymond De Cadenet T 380 Ford - 3:51.9 (211.746 km/h) | 90 - Dick Barbour Racing Brian Redman/Dick Barbour/John Paul Sr. Porsche 935/77 A Turbo - 3:52.6 (211.109 km/h) |
| Linha 9 | 94 - Whittington Brothers Racing Don Whittington/Bill Whittington/Franz Konrad Porsche 935/77 A Turbo - 3:52.8 (210.928 km/h) | 78 - WM AEREM / Team Esso Aseptogyl Christian Debias/Xavier Mathiot/Marc Sourd WM P 78 PRV - 3:52.9 (210.837 km/h) |
| Linha 10 | 71 - André Chevalley Racing Andre Chevalley/Francois Trisconi Inaltera LM 77 Ford - 3:53.9 (209.936 km/h) | 46 - Porsche Kremer Racing / Fisons Martin Raymond/Steve/Mike Franey Porsche 935/77 A Turbo - 3:54.8 (209.131 km/h) |
| Linha 11 | 48 - Haberthur / Mecarillos Racing Herbert Muller/Claude Haldi/Nico Porsche 935/76 A Turbo - 3:55.8 (208.244 km/h) | 34 - BMW Racing with Toleman Delivery Dieter Quester/Tom Walkinshaw/Rad Dougall Osella PA 6 BMW - 3:56.2 (207.892 km/h) |
| Linha 12 | 41 - Mondelo / ASA Cachia Alfredo Guarana/Paulo Gomes/Mario Amaral Porsche 935/77 A Turbo - 3:59.5 (205.027 km/h) | 23 - PP Sauber AG - Artos/Fancy Marc Surer/Eugen Strahl/Harry Blumer Sauber C 5 BMW - 4:00.1 (204.515 km/h) |
| Linha 13 | 84 - Brad Friselle Racing Brad Friselle/Bob Kirby/John Hotchkiss Chevrolet Monza - 4:02.3 (202.658 km/h) | 27 - Mogil Motors Ltd/Kores Tony Charnell/Robin Smith/Frederic Alliot/Richard Jones Chevron B 31 Ford - 4:03.3 (201.825 km/h) |
| Linha 14 | 77 - WM AEREM / Team Esso Aseptogyl Jean-Daniel Raulet/Max Mamers WM P 77 PRV - 4:03.5 (201.659 km/h) | 31 - ROC La Pierre du Nord Michel Pignard/Laurent Ferrier/Lucien Rossiaud Chevron B 36 ROC Chrysler-Simca - 4:04.2 (201.081 km/h) |
| Linha 15 | 45 - Porsche Kremer Racing John Winter/Dieter Schornstein/Philippe Gurdjian Porsche 935/77 A Turbo - 4:04.2 (201.081 km/h) | 28 - Dominique Lacaud Michel Lateste/Jean-Francois Auboiron/Dominique Lacaud Lola T 297 BMW - 4:04.5 (200.834 km/h) |
| Linha 16 | 91 - Dick Barbour Racing Bob Garretson/Steve Earle/Bob Akin Porsche 935/77 A Turbo - 4:05.2 (200.261 km/h) | 68 - Hervé Poulain Edgar Doren/Gerhard Holup/Herve Poulain/Roman Feitler Porsche 934 - 4:07.0 (198.802 km/h) |
| Linha 17 | 89 - Pozzi Thomson JMS Racing Claude Ballot-Lena/Jean-Louis Lafosse Ferrari 512 BB (Long Nose) - 4:07.1 (198.721 km/h) | 88 - Pozzi Thomson JMS Racing Jean-Claude Andruet/Spartaco Dini Ferrari 512 BB - 4:07.3 (198.560 km/h) |
| Linha 18 | 29 - ROC Modylook Michel Dubois/Daniel Gache/Julien Sanchez Chevron B 36 ROC Chrysler-Simca - 4:07.8 (198.160 km/h) | 69 - Ravenel Fréres Willy Braillard/Philippe Dagoreau/Jean-Louis Ravenel/Jacky Ravenel Porsche 934 - 4:08.0 (198.000 km/h) |
| Linha 19 | 30 - ROC La Pierre du Nord Jacques Henry/Albert Dufrene/Max Cohen-Olivar Chevron B 36 ROC Chrysler-Simca - 4:08.3 (197.761 km/h) | 61 - Auto Daniel Urcun Guy Chasseuil/Jean-Claude Lefevre/Marcel Mignot Porsche 934 - 4:09.1 (197.126 km/h) |
| Linha 20 | 72 - Jean Rondeau Jean Rondeau/Bernard Darniche/Jacky Haran Rondeau M 378 Ford - 4:09.4 (196.889 km/h) | 32 - Dorset Racing Associates with Kelly Girl Ian Harrower/Tony Birchenhough/Juliette Slaughter/Brian Joscelyne Lola T 294 S Ford - 4:10.4 (196.102 km/h) |
| Linha 21 | 85 - Ecurie Francorchamps Teddy Pilette/Jean Blaton/Raymond Touroul Ferrari 512 BB - 4:10.9 (195.711 km/h) | 24 - Team Pronuptia Michel Elkoubi/Pierre Yver/Philippe Streiff Lola T 296 Ford - 4:11.7 (195.089 km/h) |
| Linha 22 | 33 - Dorset Racing Associates / Cloud Engineering Bob Evans/Martin Birrane/Richard Down/Richard Bond Lola T 294 S Ford - 4:12.0 (194.857 km/h) | 26 - GVEA Georges Morand/Eric Vuagnat/Christian Blanc Lola T 296 Ford - 4:12.2 (194.703 km/h) |
| Linha 23 | 21 - Jean-Marie Lemerle Jean-Marie Lemerle/Alain Levie/Pierre-Francois Rousselot Lola T 294 ROC Chrysler-Simca - 4:13.7 (193.551 km/h) | 97 - Charles Ivey Racing Larry Perkins/Gordon Spice/John Rulon-Miller Porsche Carrera RS - 4:14.7 (192.792 km/h) |
| Linha 24 | 25 - Team Pronuptia Bruno Sotty/Gerard Cuynet/Jean-Claude Dufrey Lola T 294/6 Ford - 4:15.8 (191.962 km/h) | 86 - North American Racing Team Francois Migault/Lucien Guitteny Ferrari 365 GT/4 BB - 4:15.9 (191.887 km/h) |
| Linha 25 | 87 - Luigi Chinetti Snr. Jacques Guerin/Jean-Pierre Delaunay/Gregg Young Ferrari 512 BB - 4:16.3 (191.588 km/h) | 20 - C H (Chuck) Graeminger Sandro Plastina/Mario Luini/Jean-Daniel Grandjean Cheetah C 601 Ford - 4:19.3 (189.371 km/h) |
| Linha 26 | 66 - BP Racing / Anny Charlotte Verney Anny Charlotte Verney/Xavier Lapeyre/Francois Servanin Porsche Carrera RSR - 4:19.6 (189.153 km/h) | 62 - "Segolen" (Bravo) Christian Bussi/Segolen/Jean-Claude Briavoine Porsche 934 - 4:21.6 (187.706 km/h) |
| Linha 27 | 76 - WM AEREM / Team Esso Aseptogyl Christine Dacremont/Marianne Hoepfner WM P 76 PRV - 4:22.8 (186.849 km/h) | 65 - Joël Laplacette Antoine Salamin/Gerard Vial/Yves Courage/Joel Laplacette Porsche 930 - 4:25.0 (185.298 km/h) |
| Linha 28 | 64 - Times / Georges Bourdillat Georges Bourdillat/Alain-Michel Bernard/Jean-Luc Favresse Porsche Carrera RSR - 4:28.2 (183.087 km/h) |
