1st | 6 | Mark Donohue / David Hobbs | Ferrari 512 M | Penske/White Racing | 2:31.650 |
2nd | 25 | Mario Andretti / Jacky Ickx | Ferrari 312 PB | Ferrari Automobili | 2:32.470 |
3rd | 2 | Pedro Rodriguez / Jackie Oliver | Porsche 917 K | J. W. Automotive Engineering Ltd. | 2:33.840 |
4th | 3 | Vic Elford / Gérard Larrousse | Porsche 917 K | Martini & Rossi Racing | 2:34.810 |
5th | 33 | Nanni Galli / Rolf Stommelen | Alfa Romeo T33/3 | Autodelta S.p.a. | 2:34.990 |
6th | 1 | Jo Siffert / Derek Bell | Porsche 917 K | J. W. Automotive Engineering Ltd. | 2:35.180 |
7th | 22 | Peter Revson / Swede Savage | Ferrari 512 M | North American Racing Team | 2:35.500 |
8th | 20 | Masten Gregory / Gregg Young | Ferrari 512 M | Young American Racing Team | 2:37.400 |
9th | 23 | Ronnie Bucknum / Sam Posey | Ferrari 512 S | North American Racing Team | 2:39.370 |
10th | 34 | Nino Vaccarella / Toine Hezemans | Alfa Romeo T33/3 | Autodelta S.p.a. | 2:39.850 |
11th | 32 | Andrea de Adamich / Henri Pescarolo / Nino Vaccarella | Alfa Romeo T33/3 | Autodelta S.p.a. | 2:40.170 |
12th | 26 | Chuck Parsons / David Weir | Ferrari 512 S | North American Racing Team | 2:43.800 |
13th | 61 | Hugh Kleinpeter / Tony Belcher | Lola T210 Ford | Promotional Advertising Corp. | 2:54.720 |
14th | 11 | Don Yenko / Tony DeLorenzo / Jerry Thompson | Chevrolet Corvette | Troy Promotions, Inc. | 2:56.520 |
15th | 21 | Luigi Chinetti, Jr. / George Eaton | Ferrari 312 P/71 | North American Racing Team | 2:56.800 |
16th | 48 | John Greenwood / Dick Smothers | Chevrolet Corvette | John Greenwood | 2:57.770 |
17th | 12 | Jerry Thompson / John Mahler | Chevrolet Corvette | Troy Promotions, Inc. | 2:58.960 |
18th | 50 | Allan Barker / Gene Harrington | Chevrolet Corvette | John Greenwood | 3:00.110 |
19th | 16 | Bobby Rinzler / Clive Baker | Chevron B16 Ford | Ring-Free Oil Racing Team | 3:02.860 |
20th | 57 | Dave Heinz / Robert R. Johnson / Or Costanzo | Chevrolet Corvette | Dave Heinz Racing, Inc. | 3:03.110 |
21st | 17 | Tom Fraser / Charles Reynolds / Jean Sage / Clive Baker | Chevron B16 Ford | Ring-Free Oil Racing Team | 3:03.220 |
22nd | 58 | Mike Rahal / Werner Frank / Hugh Wise | Porsche 906 | Nationwide Food Brokers Racing Team | 3:03.790 |
23rd | 86 | Cliff Gottlob / Ed Lowther | Chevrolet Corvette | Cliff Gottlob | 3:06.100 |
24th | 74 | Merv Rosen / Dick Jacobs | Porsche 906 | Dr. Mervin B. Rosen | 3:06.460 |
25th | 71 | Vince Gimondo / Chuck Dietrich | Chevrolet Camaro | Takondo Racing | 3:07.930 |
26th | 56 | Sepp Greger / Hans-Dieter Weigel | Porsche 907 | Josef Greger | 3:07.970 |
27th | 47 | John Tremblay / Bill McDill | Chevrolet Camaro | Bruce Behrens Racing | 3:08.540 |
28th | 59 | Peter Gregg / Hurley Haywood | Porsche 914/6 | Brumos Porsche Audi Corp. | 3:10.720 |
29th | 72 | Bob Mitchell / Charlie Kemp | Chevrolet Camaro | Robert R. Mitchell | 3:12.500 |
30th | 28 | Ralph Meaney / Gary Wright / Forry Laucks | Porsche 914/6 | Ralph Meaney, Inc. | 3:13.810 |
31st | 29 | Stephen Behr / Charles Pete Conrad / John Buffum | Porsche 914/6 | Ralph Meaney, Inc. | 3:16.510 |
32nd | 92 | John Cordts / Don Pike | Chevrolet Camaro | B. F. Goodrich Tire Co. | 3:16.690 |
33rd | 31 | Jim Locke / Bert Everett | Porsche 911 T | Locke Lake Colony & Waterville Estates | 3:16.980 |
34th | 89 | Bert Gafford / Houghton Smith | Chevrolet Camaro | H. Houghton Smith | 3:19.940 |
35th | 18 | Janet Guthrie / Rosemary Smith | Chevron B16 Ford | Ring-Free Oil Racing Team | 3:20.480 |
36th | 15 | Michael Keyser / Bruce Jennings | Porsche 911 S | Toad Hall Racing | 3:20.580 |
37th | 19 | Tom Ciccone / Len Greenhalgh / Dick Roberts | Chevrolet Camaro | Thomas T. Ciccone, Jr. | 3:21.570 |
38th | 46 | Bob Gray / Terry Keller / Len Magnor | Ford Mustang | Sebring Racing, Inc. | 3:22.280 |
39th | 5 | Jacques Duval / George Nicholas / Bob Bailey | Porsche 914/6 | Jacques Duval | 3:22.430 |
40th | 14 | C. C. Canada / Bob Christiansen | Chevrolet Camaro | Boykin Auto Repair | 3:23.500 |
41st | 38 | Manuel Quintana / John Belperche / Reinaldo Almeida | Shelby GT500 | John P. Belperche | 3:24.120 |
42nd | 24 | Harley Cluxton / Bob Grossman | Ferrari 365 GTB/4 | North American Racing Team | 3:24.480 |
43rd | 39 | Ash Tisdelle / Peter Kirill | Porsche 911 S | K&T Enterprises | 3:25.430 |
44th | 42 | Luis Sereix / Javier Garcia / Ralph Noseda | Chevrolet Camaro | Garcia Racing | 3:25.650 |
45th | 88 | John Oliver / John Maynard / Peter Flanagan | Chevrolet Camaro | S-Car-Go-Racing | 3:25.870 |
46th | 54 | Anatoly Arutunoff / Bill Pryor / Brian Goellnicht | Abarth 2000 SP | Automobiles of Italy, Inc. | 3:25.790 |
47th | 35 | Larry Wilson / Vincent Collins | Chevrolet Camaro | Collins-Wilson Racing Ent. | 3:27.490 |
48th | 45 | Paul Pettey / Tom Dutton | Ford Mustang | Reventlow-Pettey Automobiles | 3:26.840 |
49th | 43 | Manuel Garcia / Santiago Gonzalez / Norberto Mastandrea | Chevrolet Chevy II | Garcia Racing | 3:27.490 |
50th | 63 | John Elliott / Don Gwynne | Chevrolet Camaro | Preston Hood Chevrolet | 3:28.950 |
51st | 60 | Michael Walker / Daryl Springer | Porsche 911 S | Wheel Sport, Ent. | 3:29.280 |
52nd | 66 | Richard Small / Robert Fordyce | Chevrolet Camaro | Performance Automobile | 3:30.080 |
53rd | 51 | Jim Gammon / Dean Donley | MGB | Waldron Motors Racing Team | 3:30.110 |
54th | 40 | John Hotchkis / Robert Kirby | Porsche 911 S | Bozzani Porsche, Inc. | 3:31.240 |
55th | 52 | Ben Scott / Lowell Lanier / Dave Houser | MGB | Waldron Motors Racing Team | 3:31.350 |
56th | 81 | Ray Walle / Tom Davey / Tom Reddy | Porsche 911 S | Ray Walle Ent. Inc. | 3:32.430 |
57th | 84 | Ron Goldleaf / Del Russo Taylor / Bob Wheat | Alfa Romeo GTV | Del Taylor | 3:32.510 |