| 1 | Thompson / Yenko | I. Grady Davis (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 2 | Lowther / Black / Wyllie / Yenko / Thompson | I. Grady Davis (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 3 | Johnson / Morgan | Johnson Chevrolet Co. (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 4 | Kumnick / Salyer | Ralph Salyer (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 5 | Foyt / Hurtubise | Nickey Chevrolet Co. (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 6 | Stevens / Allen | Dixie Motor Co. (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 7 | Grant / Campbell | Alan Green Chevrolet Co. (USA) | | Chevrolet | Corvette Sting Ray | C2 | Chevrolet | GT+4.0 |
| 9 | Hall / Sharp | Chaparral Cars (USA) | Jim Hall | Chaparral | 1 | | Chevrolet | P+3.0 |
| 10 | Donner / Hissom / Sharp | Chaparral Cars (USA) | Jim Hall | Chaparral | 1 | | Chevrolet | P+3.0 |
| 11 | Maggiacomo / Jopp | Holman & Moody (GB) | | Shelby | Cobra | | Ford | GT+4.0 |
| 12 | Miles / Hill / Spencer / *Roberts | Ed Hugus (USA) | | Shelby | Cobra | roadster | Ford | GT+4.0 |
| 14 | MacDonald / Roberts / *Hill / *Gurney | Shelby American, Inc. (USA) | | Shelby | Cobra | | Ford | GT+4.0 |
| 15 | Gurney / Hill / *Miles / *Spencer | Shelby American, Inc. (USA) | Carroll Shelby | Shelby | Cobra | roadster | Ford | GT+4.0 |
| 16 | Miles / *Spencer / *MacDonald / *Roberts | Shelby American, Inc. (USA) | | AC | Cobra | | Ford | GT+4.0 |
| 17 | Reed / Karras | George Reed, Jr. (USA) | | Shelby | Cobra | | Ford | GT+4.0 |
| 18 | Rodriguez / Hill | N. A. R. T. (USA) | Luigi Chinetti | Ferrari | 330 TRI/LM | Fantuzzi Spyder | Ferrari | P+3.0 |
| 19 | Parkes / Bandini / *Surtees / *Vaccarella | S.E.F.A.C. Ferrari (I) | | Ferrari | 330 LMB | | Ferrari | P+3.0 |
| 20 | McLaren / Hansgen | Briggs S. Cunningham (USA) | | Jaguar | E-type | Lightweight | Jaguar | GT4.0 |
| 21 | Kimberly / Richards | Briggs S. Cunningham (USA) | | Jaguar | E-type | | Jaguar | GT4.0 |
| 22 | Cunningham / Fitch | Briggs S. Cunningham (USA) | | Jaguar | E-type | | Jaguar | GT4.0 |
| 23 | Leslie / Morrill | Kjell Qvalle (USA) | | Jaguar | E-type | Lightweight | Jaguar | GT4.0 |
| 24 | Penske / Pabst | Mecom Racing Team (USA) | | Ferrari | 250 GTO | | Ferrari | GT3.0 |
| 25 | Ginther / Ireland | Rosebud Racing Team (USA) | | Ferrari | 250 GTO | | Ferrari | GT3.0 |
| 26 | Abate / Bordeu | Republic of Argentina (RA) | Jean-Manuel Bordeu | Ferrari | 250 GTO | | Ferrari | GT3.0 |
| 27 | Heuer / Fulp / *Thiem / *Hayes | N. A. R. T. (USA) | John Fulp | Ferrari | Dino 268 SP | | Ferrari | P3.0 |
| 28 | Bonnier / Cannon / *Fulp / *Hill | N. A. R. T. (USA) | | Ferrari | 250 GTO | | Ferrari | GT3.0 |
| 29 | Cantrell / Piper | David Piper (GB) | David Piper | Ferrari | 250 GTO | | Ferrari | GT3.0 |
| 30 | Surtees / Scarfiotti / *Bandini / *Mairesse | S.E.F.A.C. Ferrari (I) | | Ferrari | 250 P | | Ferrari | P3.0 |
| 31 | Mairesse / Vaccarella / Bandini / *Parkes / *Scarfiotti | S.E.F.A.C. Ferrari (I) | | Ferrari | 250 P | | Ferrari | P3.0 |
| 32 | Hayes / Thiem | N. A. R. T. (USA) | | Ferrari | 250 GTO | | Ferrari | GT3.0 |
| 33 | Olthoff / Bucknum | Donald Healey Motor Co. (GB) | | Austin-Healey | 3000 | | BMC | P3.0 |
| 34 | Hopkirk / Morley | Donald Healey Motor Co. (GB) | | Austin-Healey | 3000 | | BMC | P3.0 |
| 36 | Bolton / Rothschild | Standard-Triumph Motor Co. (USA) | | Triumph | TR4 | | Triumph | GT2.5 |
| 37 | Tullius / Kellner / Spencer / *Diehl | Standard-Triumph Motor Co. (USA) | | Triumph | TR4 | | Triumph | GT2.5 |
| 38 | Gates / Diehl / Cole | Standard-Triumph Motor Co. (USA) | | Triumph | TR4 | | Triumph | GT2.5 |
| 39 | George Waltman | Genser Forman Distributors (USA) | | Triumph | TR4 | | Triumph | GT2.5 |
| 40 | Wilson / Salyer / Hall / *Kolb | Keymo Motors (USA) | | Triumph | TRS | | Triumph | P3.0 |
| 40T | Charlie Kolb | Keymo Motors | | Triumph | TR4 | Conrero | Triumph | P3.0 |
| 41 | Rogers / Holquist | Morgan Motor Co. (GB) | | Morgan | Plus 4 | | Triumph | GT2.5 |
| 42 | McNeill / Claren / Rogers / *Ferguson | Morgan Motor Co. (GB) | | Morgan | Plus 4 | | Triumph | GT2.5 |
| 43 | Barth / Linge | Porsche System Engineering Ltd. (D) | | Porsche | 356 | B 2000 GS Carrera Abarth GTL | Porsche | GT2.0 |
| 44 | Wester / Holbert | Porsche System Engineering Ltd. (D) | | Porsche | 356 | B 2000 GS Carrera Abarth GTL | Porsche | GT2.0 |
| 45 | Coleman / Kolb / *Stoddard | Brumos Porsche Car Corp. (USA) | | Porsche | 356 | B | Porsche | GT2.0 |
| 46 | Merino / Rosales / *Haas | Puerto Rico Racing Team (PR) | | Porsche | 356 | A 1500 GS Carrera GT Coupé | Porsche | GT1.6 |
| 47 | Parkinson / Flaherty | Ecurie Safety Fast. (GB) | | MG | B | | BMC | GT2.0 |
| 48 | McCluggage / Carlisle | Ecurie Safety Fast. (GB) | | MG | B | | BMC | GT2.0 |
| 49 | Riley / Cone | Art Riley (USA) | | Volvo | P1800 | A | Volvo | GT2.0 |
| 50 | Hessert / Swartz, Jr. / *Diaz / *Poster | Autocars Co. Ltd. (IL) | | Sabra | Sports | | Ford | GT2.0 |
| 51 | Donohue / Segerman | RM Imports (TVR Cars) (USA) | | TVR | Grantura | | BMC | GT2.0 |
| 52 | Warren / McClure / Semko / Mosiman | RM Imports (TVR Cars) (USA) | | TVR | Grantura | | BMC | GT2.0 |
| 53 | McClure / Semko / *Anderson | RM Imports (TVR Cars) (USA) | | TVR | Grantura | | BMC | GT2.0 |
| 54 | Jordan / Titus / *Bucknum | Sports Car Graphic (USA) | | Sunbeam | Alpine | | Sunbeam | GT1.6 |
| 55 | Theodoli / Kneeland | Filippo Theodoli (USA) | | Sunbeam | Alpine | | Sunbeam | GT1.6 |
| 56 | Besancon / Publicker | Robert Publicker (USA) | | Osca | GT | 1600 | Osca | GT1.6 |
| 57 | Fleming / Baumann / Heppenstall | N. A. R. T. (USA) | | Osca | GT | 1600 | Osca | GT1.6 |
| 58 | Cassel / Sesslar | Porsche Car Imports (USA) | Chuck Cassel | Porsche | 356 | B 1600 GS Carrera Abarth GTL | Porsche | GT1.6 |
| 59 | Swanson / Durant / Richardson | Swanson-Durant (USA) | | Alfa Romeo | Giulietta Sprint Zagato | | Alfa Romeo | GT1.3 |
| 60 | Herrmann / Bianchi / *Spychiger | Abarth Corse (I) | | Abarth-Simca | 1300 | Bialbero | Abarth | GT1.3 |
| 61 | Spychiger / Pilette / *Guichet / *Noblet | Abarth Corse (I) | | Abarth-Simca | 1300 | Bialbero | Abarth | GT1.3 |
| 62 | Frescobaldi / Biscaldi | Abarth Corse (I) | | Abarth-Simca | 1300 | Bialbero | Abarth | GT1.3 |
| 63 | Namerow / Lerch / Atwell | Canada Track & Traffic Magazine (CDN) | | Abarth-Simca | 1300 | Bialbero | Simca | GT1.3 |
| 64 | Grossman / Cuomo | Abarth Corse (I) | | Abarth-Simca | 1300 | Bialbero | Abarth | GT1.3 |
| 66 | Lilley / Graham | Leon Lilley (USA) | | Lotus | Elite | | Climax | GT1.3 |
| 67 | Bentley / Gordon | Duchess Auto Company (USA) | | Lotus | Elite | | Climax | GT1.3 |
| 67T | Bentley / Gordon | Duchess Auto Company (USA) | | Lotus | Elite | | Climax | GT1.3 |
| 68 | Browne / Clark | Frederick Royston (USA) | | Austin | Mini Cooper | | BMC | P3.0 |
| 69 | Colgate / Baker | Donald Healey Motor Co. (GB) | | Austin-Healey | Sebring Sprite | | BMC | P3.0 |
| 71 | Hanna / Toland | Howard Hanna (USA) | | René Bonnet | Djet | | Renault | P3.0 |
| T | Olthoff / Bucknum / Hopkirk / Morley | Donald Healey Motor Co. (GB) | | Austin-Healey | 3000 | | BMC | P3.0 |