| Fin | St | Driver | # | Owner | Car | Laps | Money | Status | Laps Led |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 | Peter Gregg Toine Hezemans John Fitzpatrick | 30 | GeLo Racing | Porsche 935/77A 930 890 0011 | 146 | 5,000 | running | 75 |
| 2 | 1 | Dick Barbour Manfred Schurti Rolf Stommelen | 90 | Dick Barbour Performance | Porsche 935/77A 930 890 0024 | 146 | 3,000 | running | 17 |
| 3 | 13 | Dieter Quester Hans Joachim Stuck | 10 | BMW Faltz Essen | BMW 320i | 138 | 2,000 | running | 0 |
| 4 | 8 | Monte Shelton Hal Shaw Jr. | 13 | Hal Shaw Racing | Porsche 935 930 670 0180 | 136 | 5,100 | running | 0 |
| 5 | 10 | Jim Adams Chris Cord | 19 | Chris Cord Racing | DeKon Monza 1011/Chevrolet | 132 | 3,500 | running | 0 |
| 6 | 15 | Otis Chandler John Thomas | 71 | Otis Chandler | Porsche 935 930 770 0910 | 132 | 2,000 | running | 0 |
| 7 | 20 | Bob Tullius Brian Fuerstenau | 44 | Group 44 | Jaguar XJS | 130 | 3,900 | running | 0 |
| 8 | 7 | George Follmer Hurley Haywood Brian Redman Janet Guthrie | 3 | Vasek Polak Racing | Porsche 935 930 770 0955 | 128 | 1,900 | running | 0 |
| 9 | 28 | Roger Schramm Werner Frank | 97 | Framm Promotions | Porsche Carrera RSR | 127 | 1,200 | running | 0 |
| 10 | 27 | Bob Akin Steve Griswold | 32 | Earle & Akin Racing Assoc. | Porsche Carrera RSR 911 460 9048 | 125 | 1,000 | running | 0 |
| 11 | 30 | François Migault Lucien Guitteny | 25 | Grand Competition Cars Inc. | Ferrari 365 GT4/BB 18139 | 124 | 800 | running | 0 |
| 12 | 38 | Billy Hagan Hoyt Overbagh | 29 | Billy J. Hagan | Chevrolet Monza 350 | 122 | 700 | running | 0 |
| 13 | 40 | John O'Steen Bruce Jennings | 77 | Bruce Jennings | Porsche 911S | 122 | 1,800 | running | 0 |
| 14 | 23 | Babe Headley John Huber | 9 | Apple Valley Racing | Chevrolet Corvette 427 | 120 | 1,700 | running | 0 |
| 15 | 12 | Paul Miller Ludwig Heimrath | 7 | Heimrath Racing | Porsche 935 930 770 0958 | 119 | 600 | running | 0 |
| 16 | 29 | Peter Papke Michael Callas | 79 | Rennsport Porsche Works | Porsche Carrera RSR | 118 | 400 | running | 0 |
| 17 | 26 | Gene Bothello Frank Joyce | 43 | Phantom Racing | Chevrolet Corvette 427 | 118 | 1,300 | running | 0 |
| 18 | 33 | Angelo Pallavicini Enzo Calderari | 17 | Pallvano Corse | Porsche 934 930 670 0162 | 110 | 200 | running | 0 |
| 19 | 34 | Paul Schulte Tom Roberts | 91 | Tom's Mechanical Emporium | Chevrolet Corvette 350 | 108 | 800 | running | 0 |
| 20 | 25 | Michael Oleyar Tom Rynone | 98 | Rynone Industries | Chevrolet Corvette 427 | 101 | 900 | running | 0 |
| 21 | 45 | Rex Franklin Neil Kassel | 16 | Kassel Auto Parts of Syracuse | Chevrolet Camaro 302 | 100 | 600 | running | 0 |
| 22 | 9 | Don Whittington Bill Whittington | 94 | Whittington Brothers | Porsche 935/77A | 98 | 200 | radiator | 0 |
| 23 | 32 | Chuck Callis John Brandt | 60 | John J. Brandt | Chevrolet Corvette 350 | 98 | 500 | oil leak | 0 |
| 24 | 11 | Tom Gloy Greg Pickett | 6 | Pickett Racing | Chevrolet Corvette 427 | 96 | 700 | running | 0 |
| 25 | 3 | Ted Field Danny Ongais | 0 | Ted Field | Porsche 935/77A | 95 | 200 | transmission | 30 |
| 26 | 4 | Jacky Ickx George Follmer | 1 | Vasek Polak Racing | Porsche 935 930 770 0913 | 92 | engine | 0 | |
| 27 | 16 | Dave Heinz Elliott Forbes-Robinson Dave McClain | 11 | Budweiser Racing Team | DeKon Monza 1014/Chevrolet | 91 | 500 | running | 0 |
| 28 | 21 | Tom Frank Bruce Leven | 24 | Executive Industries | Porsche Carrera RSR 911 460 9056 | 85 | accident | 0 | |
| 29 | 39 | Thomas Aquilante Dave White Wade White Dave Wolpert | 51 | Thomas Aquilante | Chevrolet Corvette 350 | 78 | 200 | running | 0 |
| 30 | 41 | Bob Bergstrom Jeffrey Stephens | 22 | Jeffrey Stephens | Porsche Carrera RSR | 76 | electrical | 0 | |
| 31 | 14 | Harald Grohs Markus Höttinger | 20 | BMW Faltz Essen | BMW 320i | 76 | did not finish | 0 | |
| 32 | 46 | Kenper Miller Bill Jobe John Orr | 92 | E. F. Miller & Co. and Sherill A | Chevrolet Corvette 454 | 76 | fuel pressure | 0 | |
| 33 | 17 | Jacky Ickx George Follmer Janet Guthrie John Gunn Hurley Haywood | 4 | Vasek Polak Racing | Porsche 935 | 72 | oil leak | 0 | |
| 34 | 36 | Chuck Wade Ron Collins Joseph Hamilton | 88 | Hamilton House Racing | Porsche 911S | 72 | accident | 0 | |
| 35 | 44 | Fred Schuler Robert Schuler | 53 | Fred Schuler | Datsun 280Z | 70 | engine | 0 | |
| 36 | 42 | Robert Young David Kicak | 18 | Free Spirit Racing | Chevrolet Corvette 360 | 38 | engine | 0 | |
| 37 | 22 | Bob Nagel Nick Engels | 80 | Nagel Racing Enterprises | Chevrolet Corvette 454 | 36 | 500 | axle | 0 |
| 38 | 35 | Bob Baechle Craig Carter | 64 | Endurance Racing Enterprises Inc | Chevrolet Corvette 427 | 30 | drive train | 0 | |
| 39 | 37 | Bill Scott Dave Weir Pierre Honegger | 74 | Z & W Enterprises | Porsche 911S | 18 | accident | 0 | |
| 40 | 43 | Carmon Solomone Fred Lang | 82 | Solomone Racing | Chevrolet Camaro Turbo 302 | 11 | engine | 0 | |
| 41 | 47 | David Hobbs Ronnie Peterson | 12 | McLaren Racing | BMW 320i Turbo 002 | 10 | off course | 0 | |
| 42 | 24 | Patrick Bedard John Morton | 81 | Adams Associates | Pontiac Firebird Trans-Am | 8 | engine | 0 | |
| 43 | 31 | Bob Johnson Tuck Thomas | 62 | Lancer | Porsche Carrera RSR | 2 | mechanical | 0 | |
| 44 | 5 | David Hobbs Ronnie Peterson | 2 | McLaren Racing | BMW 320i Turbo 003 | 1 | engine | 0 | |
| 45 | 6 | Hurley Haywood John Paul | 08 | John Paul | Porsche 935/77A | 1 | 1,200 | engine | 0 |
| 46 | 18 | Robert Frostrom John Wood | 57 | Robert Frostrom Racing | Porsche Carrera RSR | 0 | did not start | 0 | |
| 47 | 19 | Norm Ridgely Jim Cook | 75 | Norman Ridgely | Porsche Carrera RSR | 0 | did not start | 0 | |
| 48 | 44 | Dan Slodowick Cliff McCandless | 52 | McCandless Automotive | Porsche 914/6 | 0 | did not start | 0 | |
| 49 | 45 | James Mancuso Bill Coykendall | 15 | Motion Marketing | Chevrolet Corvette Greenwood 010 | 0 | did not start | 0 | |
| 50 | 47 | Thomas Fiscus Jerry Lancaster | 69 | Old Gold Racing | Chevrolet Corvette 350 | 0 | did not start | 0 | |
| 51 | 49 | Anatoly Arutunoff José Marina | 41 | Automotive International | Lancia Stratos | 0 | did not start | 0 |