| Au Grattan 2003 | ||||||||||
| Enduro Race Results | ||||||||||
| Finish Pos | Car # | Name | Laps | Lag | Fast lap (seconds) | Speed | Class | Class pos | Car | Hometown |
| 1 | 71 | Ian Baas | 35 | 88.508 | 67.848 | 3D | 1 | 63 Elva MK 7-Red/Yellow | Noblesville IN | |
| 2 | 35 | Gary Armbrecht | 34 | -- 1 lap -- | 93.167 | 66.477 | 8B2 | 1 | 70 Porsche 911-Black | Grand Rapids MI |
| 3 | 27 | George Hovsepian | 33 | -- 2 laps -- | 93.116 | 65.744 | 2C | 1 | 62 Lotus 7 -Silver/Yellow | Lake Zurich IL |
| 4 | 20 | Dave Burton | 33 | 57.829 | 93.743 | 64.709 | 2C | 2 | 64 Porsche 356 C-Silver/Blue | White Lake MI |
| 5 | 95 | Michael Farmer I | 33 | 0.00079449 | 92.627 | 64.518 | 8B2 | 2 | 72 Alfa Romeo Spider-Red | Rockford MI |
| 6 | 3 | Marc Noordeloos | 33 | 0.00169584 | 96.474 | 63.182 | 2X | 1 | 71 Alfa Romeo GTV-Orange | Grand Rapids MI |
| 7 | 68 | Gary Kropf | 32 | -- 3 laps -- | 101.256 | 63.22 | 2E | 1 | 59 Austin Healey Bugeye-Yellow | Burr Ridge IL |
| 8 | 10 | Charles Foss | 32 | 0.428 | 95.917 | 63.213 | 2C | 3 | 62 Lotus S7-Green | Fremont OH |
| 9 | 60 | Rick Gurolnick | 32 | 0.856 | 94.094 | 63.205 | 2C | 4 | 60 Porsche 356 Roadster-Ivory | Hawthorn Woods IL |
| 10 | 181 | Rob Mocas | 32 | 15.547 | 95.785 | 62.952 | 8B2 | 3 | 67 Alfa Romeo GTV-Yellow/Black | Hudson OH |
| 11 | 404 | Marv Lofgren | 32 | 35.703 | 101.84 | 62.607 | 8B2 | 4 | 66 Datsun 1600-Green | Sterling IL |
| 12 | 99 | Wm. Severin Thompson | 32 | 0.00110666 | 98.008 | 61.604 | 2E | 2 | 60 Austin Healey Sprite-Red | Lake Villa IL |
| 13 | 193 | Ray Freiwald | 32 | 0.0012963 | 101.227 | 61.335 | 2B | 1 | 61 Volvo P1800-Blue | Janesville WI |
| 14 | 49 | John Deikis | 31 | -- 4 laps -- | 103.617 | 61.49 | 2D | 1 | 68 MG Midget-Red/White | Chelsea MI |
| 15 | 0 | Richard Worby | 31 | 12.421 | 101.092 | 61.28 | 8B2 | 5 | 69 MG BGT-Red/White | Lexington OH |
| 16 | 122 | Jeff Babcock | 31 | 25.177 | 98.225 | 61.066 | 2B | 2 | 68 Volvo 122 -White/Red | Chicago IL |
| 17 | 76 | Steve Bonk | 31 | 33.442 | 100.43 | 60.928 | 2X | 2 | 73 Datsun B210-White | Prospect Hts IL |
| 18 | 58 | Andy Manganaro | 30 | -- 5 laps -- | 99.615 | 58.964 | 8B1 | 1 | 71 Alfa Romeo GTA Jr.-White | Exenia OH |
| 19 | 161 | Kenneth Suhre | 30 | 5.366 | 105.989 | 58.878 | 2D | 2 | 61 Morris Mini-Yellow | Alhambra IL |
| 20 | 98 | Jeff Porasik | 30 | 0.00081197 | 107.444 | 57.856 | 2D | 3 | 67 Austin Healey Sprite-Red | Racine WI |
| 21 | 168 | Kris Larsen | 30 | 0.00102243 | 101.09 | 57.576 | 2D | 4 | 68 Austin Healey Sprite MKIV-Silver | Elk River MN |
| 22 | 97 | Marc Frost | 30 | 0.00324791 | 102.653 | 54.769 | 8B1 | 2 | 72 Fiat 128-Red | Indianapolis IN |
| 23 | 81 | Ed Ceilley | 29 | -- 6 laps -- | 111.003 | 57.499 | 8B1 | 3 | 63 Triumph Spitfire-Blue | Cedar Falls IA |
| 24 | 38 | Rich Conklin | 29 | 0.0015328 | 104.215 | 55.476 | 2A | 1 | 53 Jaguar XK120-Green | Long Beach CA |
| 25 | 44 | Charles Carl | 28 | -- 7 laps -- | 101.309 | 61.128 | 2D | 5 | 64 Morris Mini Cooper-White | Peoria IL |
| 26 | 195 | Tony Drews | 26 | -- 9 laps -- | 95.421 | 61.797 | 2B | 3 | 63 Triumph TR4-Red | Moline IL |
| 27 | 64 | John Wiley | 25 | -- 10 laps -- | 112.758 | 48.858 | 2B | 4 | 61 Triumph TR4-Red | Monclova OH |
| 28 | 79 | Donald Brick | 21 | -- 14 laps -- | 105.225 | 41.039 | 2B | 5 | 62 Triumph TR4-White | Bettendorf IA |
| 29 | 160 | Mark Cory | 16 | -- 19 laps -- | 99.74 | 29.304 | 2D | 6 | 60 Austin Healey Sprite-White | Fayetteville AR |
| 30 | 51 | Rod Beer | 14 | -- 21 laps -- | 93.443 | 74.894 | 8B2 | 6 | 69 Alfa GTV-Red | Syracuse IN |
| 31 | 43 | Rick Cook | 12 | -- 23 laps -- | 95.945 | 72.697 | 2C | 5 | 63 Lotus S7-Yellow | Dewitt MI |
| 32 | 4 | Bob Wismer | 8 | -- 27 laps -- | 108.418 | 36.759 | 2B | 6 | 62 Triumph TR4-White | Moline IL |
| 33 | 47 | Bill Dentinger | 7 | -- 28 laps -- | 110.47 | 31.068 | 2B | 7 | 59 Tornado Thuder Bolt-BRG | Waukesha WI |
| 34 | 101 | Thomas Vinje | 0 | -- 35 laps -- | 0 | 0 | 2X | 3 | 57 Eastlake Eleven-Green | Sterling IL |
| 35 | 64 | John Wiley | 0 | -15.973 | 0 | 0 | 2B | 8 | 61 Triumph TR4-Red | Monclova OH |
| 36 | 59 | Jack Drews | 0 | -15.973 | 0 | 0 | 2B | 9 | 61 Triumph TR4-Blue | Geneseo IL |
| 37 | 62 | Bob Colaizzi | 0 | -15.973 | 0 | 0 | 8B2 | 7 | 67 Alfa Duetto-Yellow | Dayton OH |
| 38 | 25 | Ron Soave | 0 | -15.973 | 0 | 0 | 2D | 7 | 58 Austin Healey Sprite-White | Roscoe IL |
| 39 | 41 | R. Hal Nichols | 0 | -15.973 | 0 | 0 | 8B2 | 8 | 71 Alfa Romeo GTV-Red | Sylvania OH |
| 40 | 3 | Sam Cummings | 0 | -15.973 | 0 | 0 | 8B2 | 9 | 71 Alfa Romeo GTV-Orange | Grand Rapids MI |
| 41 | 071 | Denny Freyvogel | 0 | -15.973 | 0 | 0 | 8B1 | 4 | 67 Alfa GT Jr-Red | Dayton OH |
| 42 | 78 | Jim Donato | 0 | -15.973 | 0 | 0 | 2D | 8 | 62 Austin Healey Sprite-Red/White/Blue | Logansport IN |
| 43 | 53 | Bob Storc | 0 | -15.973 | 0 | 0 | 8C | 1 | 65 Yenko Stinger-White/Blue | Rochester Hills MI |
| 44 | 68 | Bruce Wilkie | 0 | -15.973 | 0 | 0 | 8B2 | 1 | 67 Alfa Romeo GTV-White/Blue | Ontario Canada |
| 45 | 163 | Rick Dunleavy | 0 | -15.973 | 0 | 0 | 2C | 1 | 63 English Ford Cortino GT-Blue/White | Brookfield IL |