| Pos. | Klasse | No. | Team | Coureurs | Chassis | Ronden |
| 1 | S | 2 |  J. W. Engineering |  Pedro Rodríguez
 Leo Kinnunen
Brian Redman | Porsche 917K | 724 |
| 2 | S | 1 | J. W. Engineering |  Jo Siffert
Brian Redman | Porsche 917K | 679 |
| 3 | S | 28 |  Ferrari s.p.a. |  Mario Andretti
Arturo Merzario
 Jacky Ickx | Ferrari 512 S | 676 |
| 4 | P | 24 | North American Racing Team | Sam Posey
Mike Parkes | Ferrari 312 P Coupe | 647 |
| 5 | P | 23 | North American Racing Team | Tony Adamowicz
David Piper | Ferrari 312 P Coupe | 632 |
| 6 | GT+2.0 | 7 | Owens Corning Fibreglass | Jerry Thompson
John Mahler | Chevrolet Corvette | 608 |
| 7 | S | 21 | North American Racing Team | Gregg Young
Luigi Chinetti jr. | Ferrari 250 LM | 603 |
| 8 | S | 18 | William Wonder Inc. | William Wonder
Ray Cuomo | Ford GT40 | 579 |
| 9 | P | 40 | Gregg Loomis | Gregg Loomis
Bert Everett | Porsche 906E | 573 |
| 10 | P | 33 |  Matra Sports | François Cevert
 Jack Brabham | Matra-Simca MS650 | 565 |
| 11 | GT+2.0 | 89 | Cliff Gottlob | Cliff Gottlob
Dave Dooley | Chevrolet Corvette | 545 |
| 12 | T+2.0 | 12 | Bob Mitchell | Bob Mitchell
Charlie Kemp | Chevrolet Camaro | 535 |
| 13 | GT+2.0 | 6 | Owens Corning Fibreglass | Tony DeLorenzo
Dick Lang | Chevrolet Corvette | 534 |
| 14 | GT2.0 | 74 | Ralph Meaney | Ralph Meaney
Gary Wright
Bill Bean | Porsche 911S | 533 |
| 15 | GT+2.0 | 90 | Or Costanzo | Or Costanzo
Dave Heinz | Chevrolet Corvette | 521 |
| 16 | T+2.0 | 14 | Ray Cuomo Racing | Ray Cuomo
Bernard Gimbel
George Lisberg | Ford Mustang | 520 |
| 17 | T+2.0 | 95 | Bruce Behrens Racing | Mike Brockman
John Tremblay | Chevrolet Camaro Z28 | 511 |
| 18 | P | 34 | Matra Sports | Jean-Pierre Beltoise
Henri Pescarolo | Matra-Simca MS650 | 509 |
| 19 | T+2.0 | 11 | Laurel Racing | Larry Brock
Larry Dent | Chevrolet Camaro | 507 |
| 20 | GT2.0 | 78 | Waldron Motors | John Belperche
Tony Lilly
Don Pickett | MGB | 504 |
| 21 | GT2.0 | 79 | Waldron Motors | Chris Waldron
Lowell Lanier
Bill Barros | MGB | 490 |
| 22 | T2.0 | 48 | Del Russo Taylor | Del Russo Taylor
Hank Sheldon | Alfa Romeo 1750 GTV | 478 |
| 23 | T2.0 | 38 | Simone Fleming | Paul Fleming
Amos Johnson | Fiat 124 Sport coupé | 473 |
| 24 | GT2.0 | 76 | Scotty Addison | Scotty Addison
Erhard Dahm | Porsche 911S | 462 |
| 25 | T+2.0 | 98 | Norberto Mastandrea | Norberto Mastandrea
Smokey Drolet
Rajah Rodgers | Chevrolet Camaro | 409 |
| 26 | T+2.0 | 83 | Vincent Collins | Vincent Collins
Larry Wilson | Ford Mustang | 407 |
| 27 | P | 71 | Walle Enterprises | Ray Walle
Bob Speakman | TVR Vixen | 364 |
| DNF | GT+2.0 | 9 | Mamie Reynolds Gregory | Don Yenko
Bob Grossman | Chevrolet Camaro | 542 |
| DNF | S | 25 | North American Racing Team | Dan Gurney
Chuck Parsons | Ferrari 512 S | 464 |
| DNF | GT+2.0 | 8 | Forma Scientific | Bob Johnson
Robert Johnson
Jim Greendyke | Chevrolet Corvette | 457 |
| DNF | S | 47 | Sports Motors Inc. | Jim Bandy
Fred Stevenson
Carl Williams | Lotus 47 | 442 |
| DNF | S | 30 | Squadra Picchio-Rosso | Corrado Manfredini
Gianpiero Moretti | Ferrari 512 S | 412 |
| DNF | P | 53 | Racing Team AAW | Hans Laine
 Gijs van Lennep | Porsche 908/02 | 385 |
| DNF | P | 43 | William Harris | William Harris
Richard Lewis | Austin-Healey Sprite | 373 |
| DNF | GT2.0 | 72 |  Jacques Duval | Jacques Duval
Bob Bailey | Porsche 911T | 365 |
| DNF | T+2.0 | 97 | Preston Hood Chevrolet | John Elliott
Don Gwynne | Chevrolet Camaro Z28 | 354 |
| DNF | S | 3 |  Porsche Konstruktionen KG |  Kurt Ahrens
Vic Elford | Porsche 917K | 337 |
| DNF | GT+2.0 | 34 | Susan Cummings | Don Cummings
Warren Stumes | Shelby GT350 | 327 |
| DNF | T+2.0 | 15 | Bob Fryer | Ed Lowther
Bob Nagel | Chevrolet Camaro | 320 |
| DNF | S | 20 | North American Racing Team | Harley Cluxton
Gordon Tatum | Ferrari 275 GTB/C | 308 |
| DNF | S | 17 | Trevor Graham | Piers Forester
Andrew Hedges | Ford GT40 | 299 |
| DNF | GT2.0 | 77 | Toad Hall Racing | Bruce Jennings
Bob Tullius | Porsche 911T | 279 |
| DNF | T2.0 | 88 | Auto Enterprises of Chestnut | Barry Batchin
Dieter Oest | Lancia Fulvia HF | 268 |
| DNF | T2.0 | 84 | H.C.A.S. Inc. | Walter Brown
Buzz Marcus
Jim Sandman | BMW 2002 | 257 |
| DNF | T2.0 | 85 | Robert Whitaker | Robert Whitaker
Richard Krebs
Harvey Eckoff | Volvo 122S | 243 |
| DNF | T+2.0 | 92 | Flem-Cor Enterprises | Donna Mae Mims
Jim Corwin
Fred Pipen | Chevrolet Camaro Z28 | 220 |
| DNF | T+2.0 | 0 | Roger Penske Racing | Mark Donohue
Peter Revson | AMC Javelin | 205 |
| DNF | P | 73 | Ring Free Racing Team | Bobby Rinzler
Charles Reynolds | Austin-Healey Sprite | 178 |
| DNF | S | 22 | North American Racing Team | Ronnie Bucknum
Wilbur Pickett | Ferrari 365 GTB/4 | 142 |
| DNF | T+2.0 | 96 | Takondo Racing | Vince Gimondo
Chuck Dietrich | Chevrolet Camaro Z28 | 130 |
| DNF | S | 27 | Ferrari s.p.a. | Jacky Ickx
Peter Schetty | Ferrari 512 S | 115 |
| DNF | P | 16 | Ring Free Racing Team | Jim Baker
Clive Baker | Chevron B16 | 108 |
| DNF | GT+2.0 | 91 | Auto Research Eng. | Allan Barker
John Greenwood
Richard Hoffman | Chevrolet Corvette | 101 |
| DNF | S | 39 | Rainer Brezinka | Rainer Brezinka
Horst Petermann
Rudy Bartling | Porsche 906 | 96 |
| DNF | S | 26 | Ferrari s.p.a. | Nino Vaccarella
Ignazio Giunti | Ferrari 512 S | 89 |
| DNF | T+2.0 | 93 | Redline Engineering Inc. | Jim Harrell
Len Magner | Ford Mustang | 89 |
| DNF | P | 37 | Fred Opert Racing Chevron Cars | Brian Robinson
Hugh Kleinpeter
Fred Opert | Chevron B16 | 85 |
| DNF | S | 19 | Auto Enterprises of Chestnut | Francis Grant
Ray Heppenstall
Buzz Marcus | Ford GT40 | 82 |
| DNF | T+2.0 | 66 | Ed Matthews | Ed Matthews
Don Sesslar
Al Weaver | Ford Mustang | 63 |
| DNF | T2.0 | 86 | Arthur Mollin Racing | Arthur Mollin
Art Riley | Volvo 122S | 54 |
| DNF | GT2.0 | 70 | Sportade Racing Team | James Patterson
Paul Sanford | Porsche 911T | 29 |
| DNF | GT+2.0 | 46 | Jack Haywood | Claibourne Darden
Warren Matzen | Shelby GT350 | 26 |
| DNF | T2.0 | 55 | Don Kearney | Don Kearney
Richard Roberts
Wayne Purdy | Datsun PL510 | 24 |
| DNF | S | 5 | Randy's Auto Body Service | John Cannon
George Eaton | Lola T70 Mk.3B GT | 1 |
| DNF | P | 54 |  Juan Manuel Fangio | Carlos Pairetti
Alain de Cadenet
Jorge Omar del Rio | Porsche 908/02 | 1 |
| DNS | T+2.0 | 10 | Hewitt Racing | Allen Hewitt
Pete Ledwith | Chevrolet Camaro | 0 |
| DNS | P | 44 | H.R.H. Corp. | Steve Pieper
Jim McDaniel
Jon Krogsund | Deserter GS | 0 |
| DNS | P | 51 |  Escuderia Montjuich | Juan Fernández
José Juncadella | Porsche 908/02 | 0 |
| DNS | S | 52 | Tony Dean | Tony Dean
Peter Gregg | Porsche 917K | 0 |
| DNS | GT2.0 | 75 | Fritz Hochreuter | Fritz Hochreuter
Harry Bytzek | Porsche 911 | 0 |
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