| 1st | 3 | Vic Elford / Gérard Larrousse | Porsche 917 K | Martini International Racing Team | 1:32.9300 |
| 2nd | 15 | Jacky Ickx / Clay Regazzoni | Ferrari 312 PB | Spa Ferrari SEFAC | 1:33.9100 |
| 3rd | 19T | Rolf Stommelen / Toine Hezemans | Alfa Romeo T33/3 | Autodelta SpA | 1:35.1500 |
| 4th | 8 | Mike Parkes / Jo Bonnier | Ferrari 512 S/M | Scuderia Filipinetti | 1:35.1700 |
| 5th | 2 | Pedro Rodriguez / Jackie Oliver | Porsche 917 K | J. W. Automotive | 1:35.7400 |
| 6th | 18 | Andrea de Adamich / Henri Pescarolo | Alfa Romeo T33/3 | Autodelta SpA | 1:35.7400 |
| 7th | 1 | Jo Siffert / Derek Bell | Porsche 917 K | J. W. Automotive | 1:36.4000 |
| 8th | 16 | Toine Hezemans / Nino Vaccarella / Rolf Stommelen | Alfa Romeo T33/3 | Autodelta SpA | 1:36.9800 |
| 9th | 9 | Corrado Manfredini / Giancarlo Gagliardi | Ferrari 512 M | Scuderia Filipinetti | 1:37.7100 |
| 10th | 12 | Herbert Müller / René Herzog | Ferrari 512 M | Herbert Müller | 1:38.3000 |
| 11th | 7 | Arturo Merzario / José Juncadella | Ferrari 512 M | Escuderia Montjuich | 1:39.1100 |
| 12th | 4 | Helmut Marko / Gijs van Lennep | Porsche 917 K | Martini International Racing Team | 1:39.8500 |
| 13th | 11 | Gianpiero Moretti / Teodoro Zeccoli | Ferrari 512 M | Herbert Müller | 1:41.8000 |
| 14th | 6 | Willi Kauhsen / Reinhold Jöst | Porsche 917 K | Team Auto Usdau | 1:42.0700 |
| 15th | 5 | Gérard Pillon / Dominique Martin | Porsche 917 K | Zitro Racing Cars | 1:48.4000 |
| 16th | 28 | Spartaco Dini / Carlo Benelli | Abarth 2000 S (SE010) | "Riccardone" | 1:52.9700 |
| 17th | 44 | Antonio Zadra / "Gap" | Lola T212 Ford | Scuderia Brescia Corse | 1:53.2600 |
| 18th | 58 | Peter Ettmüller / Ernst Seiler | Porsche 914/6 | Squadra Tartaruga | 1:53.9400 |
| 19th | 29 | "Pal Joe" / Romolo Becchetti | Abarth 2000 S (SE010) | Squadra Corse Meda | 1:54.3100 |
| 20th | 21 | André Wicky / Ernesto Brambilla / Peter Mattli | Porsche 908/02 | Wicky Racing Team | 1:54.7600 |
| 21st | 24 | Otto Stuppacher / Kurt Rieder | Porsche 908/02 Flunder | Bosch Racing Team | 1:54.8700 |
| 22nd | 30 | Michel Dupont / Fabrizio Noe | Chevron B16 Ford | Michel Dupont | 1:56.8500 |
| 23rd | 22 | Hans-Dieter Weigel / Dieter Spoerry | Porsche 908/02 | Team Auto Usdau | 1:57.6700 |
| 24th | 38 | Mario Casoni / Giovanni Alberti | Chevron B19 Ford | Giovanni Alberti | 1:58.0000 |
| 25th | 26 | Willy Meier / Peter Mattli | Porsche 910 Spyder | Wicky Racing Team | 1:59.3000 |
| 26th | 46 | Ivo Grauls / Chris Tuerlinckx | Chevrolet Corvette | Trans-Europ Gulf Racing Team | 1:59.4400 |
| 27th | 23 | "Noris" / Oddone Sigala | Porsche 908/02 | Scuderia Brescia Corse | 1:59.7700 |
| 28th | 50 | Günther Huber / Erwin Kremer | Porsche 911 S | Kremer Racing | 2:00.3500 |
| 29th | 48 | Ennio Bonomelli / Christine Beckers | Porsche 911 S | Ennio Bonomelli | 2:01.5200 |
| 30th | 33 | Giuseppe Schenetti / Sergio Zerbini | Porsche 910 | Scuderia Brescia Corse | 2:02.0300 |