| 1st | 8 | Jacky Ickx / Brian Redman | Ford GT40 | J. W. Automotive Eng. | 1:54.9100 |
| 2nd | 9 | Paul Hawkins / David Hobbs | Ford GT40 | J. W. Automotive Eng. | 1:57.0000 |
| 3rd | 53 | Gerhard Mitter / Rolf Stommelen | Porsche 907 LH 2.2 | Porsche Works Team | 1:57.3100 |
| 4th | 52 | Jo Siffert / Hans Herrmann | Porsche 907 LH 2.2 | Porsche Works Team | 1:58.2200 |
| 5th | 54 | Vic Elford / Jochen Neerpasch / Rolf Stommelen / Jo Siffert / Hans Herrmann | Porsche 907 LH 2.2 | Porsche Works Team | 1:59.1500 |
| 6th | 51 | Jo Schlesser / Joe Buzzetta | Porsche 907 LH 2.2 | Porsche Works Team | 2:00.1600 |
| 7th | 76 | Ray Heppenstall / Ed Lowther / Dick Thompson | Howmet TX Continental | Howmet Corp. | 2:01.1900 |
| 8th | 81 | David Piper / Masten Gregory | Ferrari 250 LM | N.A.R.T.-Harrah Racing | 2:02.0000 |
| 9th | 20 | Udo Schütz / Nino Vaccarella | Alfa Romeo T33/2 | Autodelta S.p.a. | 2:02.2100 |
| 10th | 80 | Pedro Rodriguez / Charlie Kolb | Ferrari Dino 206 S | N.A.R.T.-Harrah Racing | 2:02.2900 |
| 11th | 23 | Mario Andretti / Lucien Bianchi | Alfa Romeo T33/2 | Autodelta S.p.a. | 2:02.3800 |
| 12th | 55 | Rico Steinemann / Dieter Spoerry | Porsche 907 LH | Squadra Tartaruga | 2:02.6000 |
| 13th | 22 | Mario Casoni / Giampiero Biscaldi / Teodoro Zeccoli | Alfa Romeo T33/2 | Autodelta S.p.a. | 2:02.7300 |
| 14th | 34 | John Gunn / Guillermo Ortega / Fausto Merello | Ferrari 250 LM | Raceco-Miami | 2:03.8000 |
| 15th | 44 | Dick Guldstrand / Ed Leslie / Scooter Patrick / Dave Jordan | Chevrolet Corvette | American International Racing | 2:04.0000 |
| 16th | 45 | Scooter Patrick / Dave Jordan / Herb Caplan | Chevrolet Corvette | American International Racing | 2:05.2000 |
| 17th | 31 | Jerry Grant / Dave Morgan | Chevrolet Corvette | DX Sunray Oil Co. | 2:05.4100 |
| 18th | 12 | Paul Vestey / Roy Pike / Paul Ridgway | Ferrari 250 LM | Paul Vestey Racing | 2:05.4300 |
| 19th | 29 | Peter Revson / Don Yenko | Chevrolet Corvette Roadster | DX Sunray Oil Co. | 2:06.3200 |
| 20th | 6 | Mark Donohue / Bob Johnson / Craig Fisher | Chevrolet Camaro | Roger Penske Racing Ent. | 2:06.6100 |
| 21st | 18 | Edward Nelson / Mike Hailwood | Ford GT40 | Edward Nelson Racing | 2:07.2000 |
| 22nd | 1 | Jerry Titus / Ronnie Bucknum | Ford Mustang | Shelby Racing | 2:07.3100 |
| 23rd | 2 | Allan Moffat / Horst Kwech / George Follmer | Ford Mustang | Shelby Racing | 2:08.5100 |
| 24th | 30 | Jerry Thompson / Tony DeLorenzo | Chevrolet Corvette Roadster | DX Sunray Oil Co. | 2:07.7300 |
| 25th | 37 | William Wonder / Ray Cuomo | Ford GT40 | William Wonder, Inc. | 2:09.7400 |
| 26th | 11 | Digby Martland / Brian Classick | Chevron B6 BMW | Chevron Cars | 2:10.4900 |
| 27th | 3 | Jim McDaniel / Glen Sullivan | Porsche 911 R | HRH Corp. | 2:12.9500 |
| 28th | 65 | George Wintersteen / Malcolm Starr | Ford Mustang | Starr Racing | 2:13.1100 |
| 29th | 71 | Joie Chitwood / Buzz Barton / Richard Hoffman | Chevrolet Camaro | Joie Chitwood Thrill Show | 2:15.9100 |
| 30th | 4 | John Moore / Jim Murphy | Chevrolet Camaro | HRH Corp. | 2:16.1300 |
| 31st | 10 | Tony Lanfranchi / Mark Konig | Nomad Mk.1 Ford | Nomad Cars | 2:16.7100 |
| 32nd | 15 | Bob Grossman / Bob Dini | Ford Mustang | Randy's Auto Body | 2:18.0000 |
| 33rd | 68 | Bill Boye / Billy Yuma | Chevrolet Camaro | Bill Boye | 2:18.7400 |
| 34th | 14 | Bert Everett / Bruce Jennings / Bob Bailey | Porsche 911 S | Bob Holbert's Garages | 2:18.8100 |
| 35th | 59 | Peter Gregg / Sten Axelsson | Porsche 911 | Brumos Porsche | 2:19.3000 |
| 36th | 7 | Billy Hagan / John McVeigh / Francis Gillebard | Mercury Cougar | Billy Hagan | 2:20.3600 |
| 37th | 32 | Jack Ryan / Pete Harrison | Porsche 911 | RBM Motors | 2:21.3700 |
| 38th | 19 | Dale Keenan / Dan Torpy / James Sutter | Chevrolet Corvette | D-K Racing | 2:21.3200 |
| 39th | 28 | Ed Ross / Craig Pelouze | Chevrolet Corvette Roadster | Corvette Racing Associates | 2:21.7100 |
| 40th | 56 | Jim Netterstrom / John Kelly / John Sabel | Porsche 911 | Ship Sharpe Maintenance | 2:22.2500 |
| 41st | 77 | Robert Stoddard / George Drolsom / Marty Gifford / Lewis Williams, Jr. | Porsche 911 | Lewis Wiliams, Jr. | 2:22.6100 |
| 42nd | 61 | Jean-Pierre Hanrioud / Sylvain Garant | Porsche 911 S | J. P. Hanrioud | 2:23.2500 |
| 43rd | 72 | Paul Richards / Tony Adamowicz / Marvin Davidson | Porsche 911 T | Davidson Enterprises | 2:23.4000 |
| 44th | 64 | Del Russo Taylor / Bob Pratt / Bruce Myers / Brad Brooker | Alfa Romeo GTA | Myers Construction | 2:24.0000 |
| 45th | 73 | Fred Opert / Joe Grimaldi | Porsche 911 | Valvoline/Opert Racing | 2:24.0500 |
| 46th | 5 | Bud Sherk / Billy Diehl | Dodge Dart | Bud Sherk Auto Fair | 2:24.5000 |
| 47th | 24 | Leo Cella / Teodoro Zeccoli / Giampiero Biscaldi | Alfa Romeo GTA | Autodelta S.p.a. | 2:25.2000 |
| 48th | 78 | Sam Posey / Jim Kauffman | Ford Mustang | | 2:25.3400 |
| 49th | 36 | Wilbur Pickett / Bill Bean / Bill Bencker | Porsche 911 | Dr. Wilbur Pickett | 2:25.3600 |
| 50th | 26 | Claudio Maglioli / Ove Andersson / Giancarlo Baghetti | Lancia Fulvia Zagato | Algar Enterprises | 2:26.0400 |
| 51st | 25 | Enrico Pinto / Spartaco Dini | Alfa Romeo GTA | Autodelta S.p.a. | 2:27.5000 |
| 52nd | 46 | Steven Payne-Herbert / Grant Miller / Roger Walton | Porsche 356B Carrera 2 | WROD Radio | 2:28.3500 |
| 53rd | 42 | Rajah Rodgers / Richard Robson / Bill Buchman | Jaguar XKE | Coquina Motors | 2:28.7000 |
| 54th | 67 | Hugh Kleinpeter / Ray Mummery / Bruce Hollander | Shelby GT350 | Port of Entry Motors | 2:30.8900 |
| 55th | 96 | John Tremblay / Billy Dingman / Vince Gimondo | Chevrolet Corvette Sting Ray | Vince Gimondo | 2:31.3900 |
| 56th | 47 | Milo Vega / John Witt | Triumph TR4A | John Cameron | 2:33.1000 |
| 57th | 43 | Carl Schwenker / Ara Dube / Dana Kelder | Triumph TR4A | Cannons Auto Service | 2:33.3000 |
| 58th | 27 | Giancarlo Baghetti / Carlo Facetti / Ove Andersson | Lancia Fulvia HF | Algar Enterprises | 2:33.7000 |
| 59th | 49 | Ike Maxwell / William J. Martin | Volvo 122 S | Ike A. Maxwell, Jr. | 2:35.7000 |
| 60th | 57 | Rick Cline / Michael Pickering | Triumph GT6 | Richard P. Cline | 2:37.2100 |
| 61st | 48 | Doyle Poole / Stott / Bruce Morehead | Triumph TR4A | Doyle Poole | 2:39.4200 |
| 62nd | 41 | James Rushin / Thomas D. Harris / Chris Waldron | MGB | Thomas Harris | 2:45.1100 |
| 63rd | 58 | Fred Andrews, Jr. / Richard Kondracki | Triumph Spitfire | Richard Cline | 2:47.2800 |
| 64th | 35 | George Waltman | Morgan Plus 4 | Aztec Motor Racing | 2:49.9900 |
| 65th | 17 | Arthur Mollin / Nick Cone | TVR Mk IV | Arthur Mollin Racing Ent. | no time |