| Time | Class | Driver | Car | Date |
| 02:06.3 | FA | John Gunn | Lola-Chevy | 28-Sep-69 |
| 02:07.1 | FB | Chuck Dietrich | Rondell Brabham | 21-Apr-74 |
| 02:07.8 | FSV | Harry Ingle | Zink | 21-Apr-74 |
| 02:08.3 | FB | Bob Welsh | Brabham | 28-Sep-69 |
| 02:08.4 | ASR | Bob Nagel | McKee MK 7 | 21-Apr-68 |
| 02:09.0 | FB | Roger Barr | Crossle | 21-Apr-68 |
| 02:10.2 | FA | Steve Durst | Vulcan | 27-Apr-69 |
| 02:11.7 | FF | Dan Torpy | Lola T202 | 8-Apr-73 |
| 02:12.6 | FC | Fred Opert | Brabham | 21-Apr-68 |
| 02:13.4 | BSR | Hugh Kleinpeter | Chevron B-23 | 8-Apr-73 |
| 02:13.8 | FSV | John Finger | Royale 71 | 8-Apr-73 |
| 02:13.8 | CM | George Alderman | McLaren | 30-Apr-67 |
| 02:14.4 | AP | Ed Lowther | Cobra | 30-Apr-67 |
| 02:14.4 | FIA Group 4 - Over 2.5 liters |
Ed Lowther | Cobra | 30-Apr-67 |
| 02:15.6 | CM | Dick Thompson | Ford GT-40 | 1-Apr-66 |
| 02:16.0 | FF | Skip Barber | Caldwell | 28-Sep-69 |
| 02:16.2 | BSR | Ike Eichelberger | Porsche Keil | 19-Oct-69 |
| 02:16.4 | CP | Jim Fitzgerald | Datsun 260Z | 21-Apr-74 |
| 02:16.6 | EM | Skip Barber | Brabham BT-8 | 30-Apr-66 |
| 02:16.8 | AP | Ed Lowther | Cobra | ? |
| 02:17.4 | CM (unofficial) | Roger Penske | Maserati Tipo 61 | 29-Apr-61 |
| 02:18.0 | AS | Doug Wills | Camaro Z-28 | 21-Apr-74 |
| 02:18.0 | FC | Bill Gebelmann | Brabham | 30-Apr-67 |
| 02:18.0 | CM | Walt Hansgen | Maserati Tipo 61 | 30-Apr-61 |
| 02:18.5 | DM | Walt Hansgen | Cooper-Maserati | 29-Apr-62 |
| 02:19.0 | FM | Skip Barber | Lotus 23B | 28-Apr-63 |
| 02:19.2 | BP | Donald Blatchley | Corvette | 21-Apr-74 |
| 02:19.2 | AS | Rusty Jowett | Camaro | 27-Apr-69 |
| 02:19.2 | FF | Bill Scott | Alexis | 27-Apr-69 |
| 02:19.2 | FIA Group 2 - Over 2.5 liters |
Rusty Jowett | Camaro | 27-Apr-69 |
| 02:19.5 | DP | Jim Fitzgerald | Datsun 2000 | 21-Apr-74 |
| 02:19.8 | BP | Dick Stockton | Cobra | 27-Apr-69 |
| 02:19.8 | DP | Dick Stockton | Cobra | 27-Apr-69 |
| 02:20.0 | EP | Brian Fuerstenau | MGB | 21-Apr-74 |
| 02:20.4 | CSR | Charles Gibson | Lotus 23 | 21-Apr-68 |
| 02:20.4 | FB | M. Hayman | Lotus 22 | 29-Oct-67 |
| 02:21.3 | FP | Pate van der Vate | Spitfire 1500 | 21-Apr-74 |
| 02:21.3 | AP | Mark Donohue | Cobra | 19-Apr-64 |
| 02:22.0 | EM | Bob Holbert | Porsche RS-61 | 29-Apr-62 |
| 02:22.1 | BP | Don Yenko | Corvette | 1-May-66 |
| 02:22.2 | FJ | Pierre Mion | Cooper | 7-Jul-63 |
| 02:22.7 | CP | William Weir | Lotus Elan | 28-Sep-69 |
| 02:22.7 | FIA Group 4 - Under 2.5 liters |
William Weir | Lotus Elan | 28-Sep-69 |
| 02:24.0 | CP | Bruce Jennings | Porsche | 1-May-66 |
| 02:24.1 | GM | Richard Grime | Elva Mk III | 30-Apr-66 |
| 02:24.2 | GM | Doc Wyllie | Lola | 28-Apr-63 |
| 02:24.6 | DP | Bob Sharp | Datsun | 27-Apr-69 |
| 02:25.2 | CM (unofficial) | Carroll Shelby | Maserati 4.5 | 1-Aug-57 |
| 02:25.4 | BS | John Moore | Porsche 911 | 29-Sep-68 |
| 02:25.8 | AS | Pete Feistmann | Mustang | 30-Jul-67 |
| 02:26.2 | CM | Ed Crawford | Jaguar D-Type | 27-Oct-57 |
| 02:26.4 | DP | Bob Tullius | TR-4A | 1-Sep-68 |
| 02:26.8 | FM | Charlie Wallace | Porsche RS | 27-Oct-57 |
| 02:26.9 | DP | Dick Thompson | Yenko Stinger | ? |
| 02:27.0 | BS | John Kelly | Porsche 911 | 30-Apr-67 |
| 02:27.1 | EP | Mike Downs | Triumph GT-6 | 28-Sep-69 |
| 02:27.2 | CM | Walt Hansgen | Jaguar D-Type | 1-Aug-57 |
| 02:27.8 | DSR | Al Beasley | Bobsy Saab SR2A | 21-Apr-74 |
| 02:28.3 | FC | Reed Rollo | Cooper | ? |
| 02:28.5 | FP | Chuck Reynolds | Sprite | 28-Sep-69 |
| 02:28.5 | EP | Pete van der Vate | Alfa Duetto | 29-Sep-68 |
| 02:28.6 | FV | Curt Newport | Zink | 21-Apr-74 |
| 02:28.8 | FP | Bob Sharp | Datsun | 27-Apr-69 |
| 02:28.8 | EP | Monty Winkler | Alfa Duetto | 21-Apr-68 |
| 02:29.2 | BP | Don Yenko | Corvette | 19-Apr-64 |
| 02:29.7 | FV | Glen Sullivan | Autodynamics | 28-Sep-69 |
| 02:29.8 | FP | Jerry Truitt | MG Midget | 1-Apr-69 |
| 02:30.0 | DSR | Bill Hobbs | Quasar SR70 | 8-Apr-73 |
| 02:30.0 | FP | Jerry Truitt | MG Midget | 21-Apr-68 |
| 02:30.0 | FP | Bob Sharp | Datsun | 21-Apr-68 |
| 02:30.4 | CS | Harry Theodoracopoulus | Alfa Romeo | 28-Sep-69 |
| 02:30.4 | FIA Group 2 - Under 2.5 liters |
Harry Theodoracopoulas | Alfa Romeo | 28-Sep-69 |
| 02:30.5 | AS | Bob Tullius | Dodge Dart | ? |
| 02:30.6 | BS | Monty Winkler | Alfa GTA | ? |
| 02:30.7 | DSR | John Girdler | Beach-Abarth | 28-Sep-69 |
| 02:30.8 | EP | George Frey | Porsche | 30-Apr-66 |
| 02:30.9 | FV | Jim McDaniel | Zink | 29-Sep-68 |
| 02:31.1 | GP | Rick Cline | Spitfire MK 3:1 | 21-Apr-74 |
| 02:31.8 | GP | Wilbur Pickett | Alfa Romeo | 28-Sep-69 |
| 02:32.4 | DSR | John Igleheart | Bobsy-Ford | 21-Apr-68 |
| 02:32.4 | FV | Bill Scott | Zink | 21-Apr-68 |
| 02:32.6 | GP | Nils Sanborn | Spitfire | 28-Sep-68 |
| 02:33.0 | GP | Jerry Truitt | Sprite | 30-Apr-67 |
| 02:33.0 | DP | Bob Tullius | TR-4 | 3-Oct-64 |
| 02:33.1 | HP | Randy Canfield | AH Sprite | 21-Apr-74 |
| 02:33.2 | CP | Bruce Jennings | Porsche Carrera | 26-Oct-63 |
| 02:33.6 | HM | Russ Norburn | Beach Mk4B-II | 29-Oct-67 |
| 02:34.8 | FP | Bob Sharp | Datsun | 30-Apr-67 |
| 02:35.4 | CS | Dick Rosenberg | Mini Cooper | 26-Jul-69 |
| 02:35.5 | CS | Jack Baumgardner | Mini | 1-Apr-69 |
| 02:36.3 | HP | Dick Seavey | Sprite | 28-Sep-69 |
| 02:36.3 | HP | Dick Seavey | Sprite | 28-Sep-69 |
| 02:36.3 | FP | Michael Hiss | TR-3 | ? |
| 02:36.4 | HP | Bob Rentzell | Sprite | 29-Sep-68 |
| 02:36.4 | HM | Ed Walsh | Lotus 23-SAAB | 19-Apr-64 |
| 02:36.6 | HP | Rod Larson | Sprite | 21-Apr-68 |
| 02:37.0 | F3 | Dan Auray | Cooper XI | 28-Apr-63 |
| 02:37.1 | GP | Richard Staples | Spitfire | ? |
| 02:38.9 | EP | Bill Romig | Porsche | 28-Apr-63 |
| 02:39.3 | FM | Bob Holbert | Porsche 550RS | 1-Aug-57 |
| 02:39.6 | CS | Barry Batchin | Austin Cooper S | 1-May-66 |
| 02:40.0 | DS | Al Berkelhammer | Austin Cooper S | 28-Sep-69 |
| 02:40.4 | FP | Art Riley | Volvo P-1800 | 19-Apr-64 |
| 02:40.5 | FV | Whit Tharin | Formcar | ? |
| 02:40.5 | FV | Chet Freeman | Bobsy Vanguard | ? |
| 02:42.2 | BP | Dick Thompson | Corvette | 1-Aug-57 |
| 02:42.5 | CS | Rick Stevens | Mini | 21-Apr-68 |
| 02:42.6 | DS | Al Berkelhammer | Mini Cooper | 26-Oct-68 |
| 02:43.6 | GP | Hap Sharp | Datsun | 3-Oct-64 |
| 02:43.8 | DS | Al Berkelhammer | Austin Cooper S | 1-Apr-69 |
| 02:44.9 | HP | Bob Turgeon | Sprite | 30-Apr-67 |
| 02:46.8 | DS | Al Cosentino | Abarth | 21-Apr-68 |
| 02:47.1 | FV | Whit Tharin | Formcar | 18-Apr-64 |
| 02:47.5 | DS | Al Cosentino | Fiat Abarth | 1-May-66 |
| 02:48.2 | SSS | Don Knowles | Opel | 1-Aug-72 |
| 02:48.5 | EP | George Ragsdale | AC Bristol | 1-Aug-57 |
| 02:49.2 | SSS | Don Knowles | Opel | 1-Apr-72 |
| 02:49.4 | SSC | G. Robert Jones | Porsche 914 | 21-Apr-74 |
| 02:50.0 | HP | Bob Nagel | Sprite Mk I | 3-Oct-64 |
| 02:53.3 | GP | Ed Hugus | Alfa | 1-Aug-57 |
| 03:02.0 | SSC | Dave Moubray | Triumph GT-6 | 8-Apr-73 |