| 1 | 2 | 1. S | John Wyer Automotive | Pedro Rodriguez · Jackie Oliver | Porsche 917K | — | 688 | WSPR historical record |
| 2 | 23 | 2. S | North American Racing Team | Ronnie Bucknum · Tony Adamowicz · DNS - Alain De Cadenet | Ferrari 512S Spyder | — | 687 | WSPR historical record |
| 3 | 6 | 3. S | Roger Penske/Kirk F. White | Mark Donohue · David Hobbs | Ferrari 512M spec. | — | 674 | WSPR historical record |
| 4 | 11 | 1. GT+2.5 | Owens-Corning Fibreglass | Tony DeLorenzo · Don Yenko · John Mahler | Chevrolet Corvette | — | 613 | WSPR historical record |
| 5 | 21 | 1. P | North American Racing Team | Nestor Garcia-Veiga · Luigi Chinetti, Jr. · Alain De Cadenet | Ferrari 312P/71 | — | 584 | WSPR historical record |
| 6 | 57 | 2. GT+2.5 | David Heinz | Dave Heinz · Or Costanzo | Chevrolet Corvette | — | 581 | WSPR historical record |
| 7 | 5 | GT2.5 28 | n Oil 57 | Jacques Duval · George Nicholas · Bob Bailey | Porsche 914/6 GT ASK US Su | — | 9 | WSPR historical record |
| 8 | 19 | GT2.5 32 | lph Meaney 57 | Stephen Behr · John Buffum · Erwin Kremer | Porsche 914/6 GT ASK US Ra | — | 1 | WSPR historical record |
| 9 | 31 | 3. GT2.5 | Jim Locke | Bert Everett · Jim Locke · Jim Netterstrom | Porsche 911T | — | 570 | WSPR historical record |
| 10 | 50 | 3. GT+2.5 | John Greenwood | John Greenwood · Allan Barker · Dick Lang | Chevrolet Corvette | — | 554 | WSPR historical record |
| 11 | 17 | 1. T | Vincenzo Gimondo | Vince Gimondo · Chuck Dietrich | Chevrolet Camaro | — | 542 | WSPR historical record |
| 12 | 45 | 2. P | Baker Motor Atlanta | Clive Baker · Bob Grossman · Sam Brown · Charles Reynolds | Chevron B16 Ford | — | 534 | WSPR historical record |
| 13 | 42 | 2. T | Garcia Brothers | Javier Garcia · Luis Sereix · Richard Small | Chevrolet Camaro | — | 527 | WSPR historical record |
| 14 | 10 | 4. GT2.5 | Ray Walle | Ray Walle · Michael Sherwin | Porsche 911S | — | 498 | WSPR historical record |
| 15 | 43 | 3. P | Jean-Pierre Hanrioud | Jean-Pierre Hanrioud · Jean Sage | Chevron B16 Ford | — | 488 | WSPR historical record |
| 16 | 44 | 5. GT2.5 | Art Bunker | Bob Hindson · Kendall Noah · Art Bunker | Porsche 911T | — | 488 | WSPR historical record |
| 17 | 51 | 6. GT2.5 | Chris Waldron | Jim Gammon · Dean Donley · Carlos Garza | MGB GT | — | 483 | WSPR historical record |
| 18 | 64 | 4. GT+2.5 | Robert Luebbe | Robert Luebbe · Bob Baechle · John Orr | Chevrolet Corvette | — | 469 | WSPR historical record |
| 19 | 89 | 3. T | Houghton Smith | Ray Brimble · Houghton Smith | Chevrolet Camaro | — | 452 | WSPR historical record |
| 20 | 72 | 4. T | Bob Mitchell | Bob Mitchell · Charlie Kemp | Chevrolet Camaro | — | 408 | WSPR historical record |
| retired | 18 | GT2.5 33 | lph Meaney 47 | Ralph Meaney · Bill Bean · Gary Wright | Porsche 914/6 GT ASK US Ra | — | 0 | WSPR historical record |
| retired | 3 | S | Martini International Racin | Helmut Marko · Rudi Lins | Porsche 917K | — | 462 | WSPR historical record |
| retired | 33 | T | John McComb | John McComb · Bob Tullius | Ford Mustang | — | 395 | WSPR historical record |
| retired | 36 | T | Dick Sears | Warren Matzen · Tom Heyser · Dick Sears | Ford Mustang | — | 369 | WSPR historical record |
| retired | 16 | GT2.5 | Michael Keyser | Michael Keyser · Bob Beasley · Bruce Jennings | Porsche 911S | — | 337 | WSPR historical record |
| retired | 52 | GT2.5 | Chris Waldron | Ben Scott · Lowell Lanier · Dave Houser | MGB GT | — | 311 | WSPR historical record |
| retired | 97 | T | Susan T. Cummings | Warren Stumes · Don Cummings | Shelby GT350 | — | 306 | WSPR historical record |
| retired | 4 | S | Martini International Racin | Vic Elford · Gijs van Lennep | Porsche 917K | — | 274 | WSPR historical record |
| retired | 59 | GT2.5 23 | umos Porsche 26 | Peter Gregg · Hurley Haywood | Porsche 914/6 GT ASK US Br | — | 0 | WSPR historical record |
| retired | 98 | T | Ed Matthews | Ed Matthews · Swede Savage · Danny Ongais | Ford Mustang | — | 238 | WSPR historical record |
| retired | 47 | T | Bruce Behrens | John Tremblay · Bill McDill · Bob Beatty | Chevrolet Camaro | — | 230 | WSPR historical record |
| retired | 88 | T | Norberto Mastandrea | Norberto Mastandrea · Tony Lilly | Chevrolet Camaro | — | 215 | WSPR historical record |
| retired | 22 | S | North American Racing Team | Peter Revson · Sam Posey · Chuck Parsons · Luigi Chinetti, Jr. | Ferrari 512M | — | 202 | WSPR historical record |
| retired | 15 | GT2.5 | Kirill/Tisdelle | Peter Kirill · Ash Tisdelle | Porsche 911S | — | 163 | WSPR historical record |
| retired | 28 | S | Escuderia Montjuich | Arturo Merzario · José Juncadella | Ferrari 512S | — | 161 | WSPR historical record |
| retired | 70 | GT2.5 | William A. Davidson | John Belperche · William A. Davidson | Triumph GT6 | — | 157 | WSPR historical record |
| retired | 14 | GT+2.5 | C. C. Canada | C. C. Canada · Joe Hines, Jr. · Wilbur Pickett | Chevrolet Camaro | — | 137 | WSPR historical record |
| retired | 26 | S | Ecurie Francorchmps | Hughes de Fierlant · Gustave Gosselin | Ferrari 512S | — | 124 | WSPR historical record |
| retired | 92 | T | B.F. Goodrich | John Cordts · Don Pike | Pontiac Firebird | — | 121 | WSPR historical record |
| retired | 1 | S | John Wyer Automotive | Jo Siffert · Derek Bell | Porsche 917K | — | 113 | WSPR historical record |
| retired | 79 | T | Danny L. Moore | Hal Lawrence · Dan Moore · Gary Bishop | Shelby GT350 | — | 106 | WSPR historical record |
| retired | 8 | GT2.5 | American Racing | Tom Nehl · Perry | Porsche 911S | — | 88 | WSPR historical record |
| retired | 12 | GT+2.5 | Owens-Corning Fibreglass | Jerry Thompson · John Mahler | Chevrolet Corvette | — | 83 | WSPR historical record |
| retired | 40 | GT2.5 | Fritz Hochreuter | Fritz Hochreuter · Rudy Bartling · DNS - Horst Petermann · DNS - Rainer Brezinka | Porsche 911 | — | 58 | WSPR historical record |
| retired | 48 | T | John Oliver | Sheldon Dobkin · John Maynard · John Oliver | Chevrolet Camaro | — | 37 | WSPR historical record |
| retired | 74 | T | Al Straub | Al Straub · Walter Brown | Ford Mustang | — | 35 | WSPR historical record |
| retired | 20 | S | Young American Racing Team | Masten Gregory · Gregg Young · DNS - John Cannon | Ferrari 512M | — | 16 | WSPR historical record |
| retired | 91 | T | Ralph Noseda | Ralph Noseda · Pepe Nunez · DNS - Jef Stevens · DNS - Ray Mummery | Chevrolet Camaro | — | 9 | WSPR historical record |
| did_not_start | 46 | P | Baker Motor Atlanta | Bobby Rinzler · Wayne Christian · Tom Fraser · Jim Baker | Chevron B16 Ford | — | | WSPR historical record |
| did_not_start | 75 | T | Reventlow/Pettey | Paul Pettey · Larry Bock | Ferrari 512M | — | | WSPR historical record |
| did_not_qualify | 35 | T | Collins/Wilson | Larry Wilson · Vincent P. Collins | Chevrolet Camaro | — | | WSPR historical record |
| did_not_qualify | 37 | T | Don Yenko | Robert R. Johnson · Donna Mae Mims · Kirt Wetzel · Bob Nagel | Chevrolet Vega | — | | WSPR historical record |
| did_not_qualify | 38 | T | Simone N. Fleming | Paul Fleming · Amos Johnson · Bill Barnes | Fiat 124 | — | | WSPR historical record |
| did_not_qualify | 41 | GT2.5 | Del Russo Taylor | Del Russo Taylor · Ron Goldrich · Buzz Dyer · Ron Goldleaf | Alfa Romeo GTV | — | | WSPR historical record |
| did_not_qualify | 55 | T | Don Kearney | Bobby Clark · Don Kearney | Datsun 510 | — | | WSPR historical record |
| did_not_qualify | 65 | GT2.5 | Hameline | Rhindress · Robert Clark | Lancia Fulvia HF | — | | WSPR historical record |
| did_not_qualify | 77 | T | Grand Prix Motors | Joe Marcus · Larry Dent | BMW 2002 | — | | WSPR historical record |
| did_not_qualify | 80 | T | Fred Lieb | Fred Lieb · Smokey Drolet · Mitch Daroff | Dodge Dart | — | | WSPR historical record |
| did_not_qualify | 81 | T | Dieter Oest | Tillson · Dieter Oest · Rodolfo Junco | Lancia Fulvia | — | | WSPR historical record |
| did_not_qualify | 81 | T | Robert E. Lewis | Robert E. Lewis · Charles Fairbrother | Ford Cortina GT | — | | WSPR historical record |
| did_not_qualify | 93 | GT2.5 | Donald S. Wright | Robert Whitaker · John Tunstall · Ray Reed | Volvo P1800 | — | | WSPR historical record |
| source_section_running_in_practice | T | S | Martini International Racin | Vic Elford | Porsche 917K | — | | WSPR historical record |
| source_section_running_in_practice | T | S | John Wyer Automotive | Pedro Rodriguez · Jackie Oliver · Jo Siffert · Derek Bell | Porsche 917K | — | | WSPR historical record |
| entry_only | 7 | GT2.5 | George Drolsom | George Drolsom · Bill Campbell | Porsche 911S | — | | WSPR historical record |
| entry_only | 9 | S | Escuderia Nacional CS | Alex Soler-Roig · Peter George | Porsche 917K | — | | WSPR historical record |
| entry_only | 24 | GT+2.5 | North American Racing Team | Alain De Cadenet · David Weir | Ferrari 365 GTB/4 | — | | WSPR historical record |
| entry_only | 25 | GT2.5 | North American Racing Team | Harley Cluxton · Gordon Tatum | Ferrari Dino 246GT | — | | WSPR historical record |
| entry_only | 26 | S | Scuderia Filipinetti | Mike Parkes · Jo Bonnier | Ferrari 512M | — | | WSPR historical record |
| entry_only | 30 | T | Ray Cuomo | Ray Cuomo · John Gimbel | Ford Mustang | — | | WSPR historical record |
| entry_only | 71 | S | David Weir | David Weir · Alain De Cadenet | Ford GT40 | — | | WSPR historical record |
| entry_only | 86 | GT+2.5 | Cliff Gottlob | Cliff Gottlob · Ed Lowther | Chevrolet Corvette | — | | WSPR historical record |
| entry_only | 87 | T | Preston Hood | John Elliott · Don Gwynne, Jr. | Chevrolet Camaro | — | | WSPR historical record |
| entry_only | 94 | GT2.5 | Donald S. Wright | Donald S. Wright · Richard K. Myers · John Prasek · John Turnstall | MGB | — | | WSPR historical record |
