(Race Results)
| Pos. | No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Pos. | Gr. |
| 1st | 30 | de Adamich / Peterson | Alfa Romeo T33/3 | Autodelta S.p.A. | 279 | 1090.1890 kms | 181.4873 | 1st | P |
| 2nd | 1 | Siffert / van Lennep | Porsche 917 K | J. W. Automotive Engineering | 277 | | | 1st | S |
| 3rd | 2 | Bell / Attwood | Porsche 917 K | J. W. Automotive Engineering | 259 | | | 2nd | S |
| 4th | 63 | De Cadenet / Motschenbacher | Ferrari 512 M | Ecurie Francorchamps | 253 | | | 3rd | S |
| 5th | 49 | Johnson / Greenwood | Chevrolet Corvette | John Greenwood Racing | 229 | | | 1st | GT+2.5 |
| 6th | 59 | Gregg / Haywood | Porsche 914/6 | Brumos Porsche-Audi | 228 | | | 1st | GT2.5 |
| 7th | 57 | Heinz / Yenko | Chevrolet Corvette | Or Costanzo/Tri City Corvette Club | 221 | | | 2nd | GT+2.5 |
| 8th | 41 | Schumacher / McClure / Kiefer | Chevrolet Corvette | Iroquois Racing Associates | 210 | | | 3rd | GT+2.5 |
| 9th | 31 | Everett / Beasley | Porsche 911 T | Locke Development Corporation | 168 | | | 2nd | GT2.5 |
| 10th | 68 | Keating / Pentecost / Torgersen | Porsche 911 S | Baker Motor Co. | 162 | | | | GT2.5 |
Not classified:
| No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Reason | Gr. |
| 43 | Adamowicz / Cabral | Porsche 917 K | David Piper Racing | 191 | | | | S |
| 46 | Rahal / Wise / Kroll | Porsche 906 K | Brokers Racing/Nationwide Food | 180 | | | | S |
Did not finish:
| No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Reason | Gr. |
| 36 | Galli / Elford | Alfa Romeo T33/3 | Autodelta S.p.A. | 258 | | | Collision with Barber | P |
| 67 | Harrison / Fraser / Rinzler / Barber | Lola T212 Ford | Baker Motor Co. | 226 | | | Collision with Elford | P |
| 14 | Posey / Bucknum | Ferrari 512 M | North American Racing Team | 126 | | | Starter motor | S |
| 61 | Kleinpeter / Belcher | Lola T212 Ford | Promotional Advertising | 104 | | | Engine | P |
| 33 | Pescarolo / Stommelen | Alfa Romeo T33/3 | Autodelta S.p.A. | 97 | | | Accident | P |
| 64 | Baechle / Summers / Kepler | Chevrolet Corvette | Bob Baechle | 90 | | | Radiator | GT+2.5 |
| 40 | Ickx / Andretti | Ferrari 312 PB | S.p.A. Ferrari SEFAC | 55 | | | Starter motor | P |
| 6 | Donohue / Hobbs | Ferrari 512 M | Roger Penske/Kirk F. White | 53 | | | Steering | S |
| 87 | Dean / Matchett / Parsons | Porsche 908/02 | A. G. Dean (Racing) | 47 | | | Fuel pump | P |
| 32 | Locke / Bailey | Porsche 911 S | Locke Development Corporation | 25 | | | Wheel | GT2.5 |
| 48 | Müller / Eaton | Ferrari 512 M | Herbert Müller Racing | 17 | | | Collision with Keyser | S |
| 16 | Keyser / Jennings | Porsche 911 T | Toad Hall Racing | 13 | | | Collision with Müller | GT2.5 |
| 50 | Hoffman / Cipelle / Greenwood | Chevrolet Corvette | John Greenwood Racing | 6 | | | Suspension | GT+2.5 |
| 60 | Ormes / Brown / Bondurant | Lola T70 Mk.3B GT Chevrolet | Bahamas Racing | 2 | | | Throttle cable | S |
Did not start:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 35 | Elford / Galli | Alfa Romeo T33/TT/3 | Autodelta S.p.A. | Accident in practice | P |
| 21 | Young / Adams | Ferrari 512 M | Young American Racing Team | Fuel leak | S |
| 80 | Minter / Bartling / Hochreuter | Porsche 911 | Fritz Hochreuter | | GT2.5 |
Did not qualify:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 91 | Luebbe / Orr | Chevrolet Corvette | Robert Luebbe | | GT+2.5 |
| 70 | Kremer / Durant | Porsche 911 | Kremer Racing | | GT2.5 |
| 5 | Duval / Nicholas | Porsche 914/6 | Jacques Duval | | GT2.5 |
| 12 | Conrad / Caldwell | Porsche 914/6 | Ralph Meaney | | GT2.5 |
| 37 | Oest / Tillson | Porsche 911 | Holbert/Oest | | GT2.5 |
Practiced:
| Pos. | No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Reason | Pos. | Gr. |
| T | Siffert / van Lennep / Bell / Attwood | Porsche 917 K | J. W. Automotive Engineering | | | | T-car | | S |
Entered cars that did not arrive:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 3 | Jo Bonnier | Lola T212 Ford | Scuderia Filipinetti | | P |
| 10 | Behr / Wright | Porsche 914/6 | Ralph Meaney | | GT2.5 |
| 11 | Cowell / Jenkins / Conrad | Porsche 914/6 | Ralph Meaney | | GT2.5 |
| 13 | Glanton / Alden | Porsche 911 S | Jim Glanton | | GT2.5 |
| 18 | Paul / Harris | Chevrolet Corvette | Es-Pa Racing | | GT+2.5 |
| 22 | Baumgartner / Herman | Chevron B8 BMW | Don A. Baumgartner | | S |
| 45 | Guillermo Ortega | Porsche 908/02 | Guillermo Ortega | | P |
| 53 | Dumoing / Cerruti | Lola T212 Ford | Georges Dumoing | | P |
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