(Race Results)
| Pos. | No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Pos. | Gr. |
| 1st | 26 | John Fulp | Lola T70 Mk.2 Chevrolet | Raceway Engineering, Inc. | 87 | 321.8688 kms | 163.2840 | 1st | O2L |
| 2nd | 77 | Mak Kronn | McKee Mk.6 Chevrolet | Honda of Waukegan | 87 | | | 2nd | O2L |
| 3rd | 52 | Bill Eve | Genie Mk X Ford | Eve & Jones Racing | 85 | | | 3rd | O2L |
| 4th | 9 | Skip Hudson | Lola T70 Chevrolet | T. M. I. Associates | 85 | | | 4th | O2L |
| 5th | 8 | Jerry Grant | Lola T70 Ford | All American Racers | 85 | | | 5th | O2L |
| 6th | 56 | Ralph Trieschmann | Porsche 906 | | 82 | | | 1st | U2L |
| 7th | 15 | Herb Wetanson | Porsche 906 | Herb Wetanson | 81 | | | 2nd | U2L |
| 8th | 12 | George Wintersteen | Chevrolet Corvette Grand Sport | Wintersteen Racing, Inc. | 81 | | | 6th | O2L |
| 9th | 4 | Peter Gregg | Porsche 906 | Brumos Porsche Corp. | 81 | | | 3rd | U2L |
| 10th | 41 | John Dennis | Denmacher II | Suburban Racing Team | 74 | | | 4th | U2L |
| 11th | 64 | Oscar Koveleski | Cooper - Chevrolet | Auto World | 66 | | | 7th | O2L |
| 12th | 48 | Skip Barber | Brabham BT8 Climax | | 65 | | | 5th | U2L |
| 13th | 57 | Chuck Dietrich | Elva Mk VII S BMW | Suzy Dietrich | 63 | | | 6th | U2L |
| 14th | 95 | Eppie Wietzes | Ford GT40 | Comstock Racing Team | 62 | | | 8th | O2L |
Did not finish:
| No. | Drivers | Car | Entrant | Laps | Distance | Km/h | Reason | Gr. |
| 75 | Bob Montana | McKee Mk V Plymouth | Bob Montana | 62 | | | DNF | O2L |
| 46 | John Morton | Lotus 23 Porsche | | 48 | | | DNF | U2L |
| 31 | Don Skogmo | Genie Mk VIII Chevrolet | Don R. Skogmo | 38 | | | DNF | O2L |
| 0 | Chuck Parsons | Genie Mk X Chevrolet | Hilton Racing Team | 37 | | | DNF | O2L |
| 29 | Bob Bucher | Lola T70 Mk.2 Ford | Young B.A.R.F. Racing Team, Inc. | 34 | | | DNF | O2L |
| 3 | Ludwig Heimrath | McLaren - Ford | | 25 | | | DNF | O2L |
| 6 | Mark Donohue | Lola T70 Mk.2 Chevrolet | Roger Penske Racing Enterprises | 18 | | | Accident, fire | O2L |
| 62 | John Cannon | Genie Mk X Oldsmobile | Dan Blocker Motor Racing, Inc. | 18 | | | Accident | O2L |
| 7 | Joe Buzzetta | Porsche 906 | Porsche Corp. of America | 17 | | | Accident | U2L |
| 65 | Ed Hamill | Hamill SR3 Oldsmobile | Hamill Cars, Inc. | 15 | | | DNF | O2L |
| 23 | Doug Revson | Lotus 23 Climax | Douglas Revson | 13 | | | DNF | U2L |
| 17 | Lothar Motschenbacher | McLaren Elva Mark II Oldsmobile | Lothar Motschenbacher | 11 | | | DNF | O2L |
| 96 | Mike Goth | McLaren Elva Mark IB Chevrolet | Mike Goth Racing | 7 | | | Transmission | O2L |
| 88 | Harold Keck | Shelby Cobra Ford | Archway Ford, Inc. | 6 | | | DNF | O2L |
| 1 | Charlie Kolb | Porsche 906 | Schroeder Imported Motor Corp. | 2 | | | Clutch | U2L |
Did not start:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 33 | Scooter Patrick | Porsche 906 | | Engine in practice | U2L |
| 87 | Bill Bowman | Porsche 906 | William S. Bowman | Accident in practice | U2L |
| Ken Miles | Porsche 906 | | Engine in practice | U2L |
Did not qualify:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 42 | Candido DaMota | Lotus - Climax | Candido DaMota | | U2L |
| 19 | Ed Hessert | Elva Mk VII Ford | Dr. E. C. Hessert | | U2L |
| 81 | Alvin Forsyth | Chevrolet Corvette | Alvin M. Forsyth | | O2L |
Entered cars that did not arrive:
| No. | Drivers | Car | Entrant | Reason | Gr. |
| 11 | Chuck Sarle | Piranha | Charles R. Sarle | | O2L |
| 14 | Bob Nagel | Elva - BMW | Robert J. Nagel | | U2L |
| 39 | Charles Cox | McLaren Elva Mark II Chevrolet | Charles Cox | Car destroyed in Road America | O2L |
| 44 | Jerry Hansen | Wolverine | Jerry Hansen | | O2L |
| 45 | Rick Muther | McLaren Elva Mark I | James A. Linen, IV | | O2L |
| 47 | Bob Brown | Lola T70 Mk.2 Chevrolet | Robert R. Brown | | O2L |
| 69 | John Keane | N & B Special | N & B Automotive | | O2L |
| 72 | George Ralph | Elva Mk VIII BMW | Fred Opert Racing Enterprises | | U2L |
| 73 | Fred Ashplant | Elva Mk VIII BMW | Fred Opert Racing Enterprises | | U2L |
| 92 | Chuck Akins | Bobsy SR3 | Ecurie Oh!! Good Grief | | U2L |
| 97 | Charlie Hayes | McLaren Elva Mark II Chevrolet | Charles Hayes Racing | | O2L |
| 99 | Steve Diulo | Lotus 19G | Steve Diulo | | O2L |
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