Trenton 200
Trenton International Speedway
1 Mile Paved Oval
200 Laps/200 Miles
September 25, 1966
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | 1 | Mario Andretti | 1 | Dean Van Lines | Brawner Hawk | Ford | 200 | 1:54:08.84 105.127 | 400 |
| 2 | 2 | Al Unser | 24 | American Red Ball | Lola | Ford | 198 | Flagged | 320 |
| 3 | 13 | A. J. Foyt | 2 | Sheraton-Thompson | Coyote | Ford | 198 | Flagged | 280 |
| 4 | 4 | Dick Atkins | 98 | Agajanian REV 500 | Shrike | Offy SC | 197 | Flagged | 240 |
| 5 | 7 | Roger McCluskey | 8 | G. C. Murphy | Eagle | Ford | 196 | Flagged | 200 |
| 6 | 3 | Jim McElreath | 3 | Zink-Urschel-Slick | Brabham | Ford | 194 | Out of fuel | 160 |
| 7 | 14 | Al Smith | 38 | Federal Engineering | Ward | Offy | 193 | Flagged | 120 |
| 8 | 22 | Greg Weld | 96 | Harrison | Eisert | Chevy | 191 | Flagged | 100 |
| 9 | 12 | Al Miller (Krulac) | 85 | Caves Buick | Gerhardt | Offy SC | 187 | Flagged | 80 |
| 10 | 23 | Ralph Liguori | 35 | Enterprise Machine | Flynn D | Offy | 186 | Flagged | 60 |
| 11 | 25 | Wally Dallenbach | 24 | Ken Brenn | Meskowski D | Offy | 184 | Flagged | 40 |
| 12 | 5 | Gordon Johncock | 72 | Weinberger Homes | Gerhardt | Ford | 156 | Broken drive shaft | 20 |
| 13 | 11 | Chuck Hulse | 86 | Wynn's | Watson | Offy | 137 | Blown engine | |
| 14 | 8 | Bud Tingelstad | 22 | Federal Engineering | Gerhardt | Offy | 114 | Burned piston | |
| 15 | 20 | Gary Congdon | 53 | Valvoline | Huffaker | Offy | 107 | Broken injector shaft | |
| 16 | 17 | Bob Hurt | 36 | Viking Racing | Gerhardt | Offy | 103 | Blown engine | |
| 17 | 24 | Jim Hurtubise | 56 | Gerhardt | Gerhardt | Offy SC | 85 | Mechanical | |
| 18 | 6 | Billy Foster | 27 | Jim Robbins | Vollstedt | Ford | 84 | Ignition | |
| 19 | 10 | Bob Harkey | 87 | California Speed Shop | Halibrand | Offy | 59 | Water leak | |
| 20 | 21 | Larry Dickson | 7 | Vita Fresh Orange Juice | Gerhardt | Ford | 55 | Spun out | |
| 21 | 18 | Arnie Knepper | 81 | Central Excavating | Gerhardt | Offy | 49 | Radiator leak | |
| 22 | 9 | Lloyd Ruby | 29 | All American Racers | Lotus | Ford | 35 | Broken universal joint | |
| 23 | 19 | Don Branson | 95 | Leader Card | Watson FE | Offy | 31 | Mechanical | |
| 24 | 16 | Sam Sessions | 34 | Michner Petroleum | Lola | Ford | 20 | Wrecked | |
| 25 | 15 | Bobby Grim | 39 | Racing Associates | Watson FE | Offy | 20 | Wrecked | |
| 26 | 26 | Ronnie Duman | 11 | Vita Fresh Orange Juice | Huffaker | Offy SC | 6 | Spun out | |
| -- | -- | Gary Bettenhausen | 61 | American Eagle | Meskowski D | Offy | -- | DNS, too slow | |
| -- | -- | Ray Duckworth | 97 | Stoye Racing | Stoye D | Offy | -- | Did not qualify | |
| -- | -- | Joe Leonard | 6 | Yamaha | Eagle | Ford | -- | Wrecked practice | |
| -- | -- | Bobby Unser | 4 | Leader Card | Gerhardt | Offy | -- | Wrecked practice | |
| -- | -- | Carl Williams | 58 | Nelson | Kurtis FE | Offy | -- | DNS, too slow | |
| -- | -- | George Snider | 77 | Dayton Steel Wheel | Gerhardt | Ford | -- | Arrived too late | |
| -- | -- | Gig Stephens | 71 | Fairchild-Hiller | Halibrand | Offy | -- | DNS, too slow | |
| -- | -- | Mel Kenyon | 94 | Gerhardt | Gerhardt | Offy | -- | Did not appear |
| Lap Leaders | Total | Laps |
| Mario Andretti | 199 | 1-193, 195-200 |
| Jim McElreath | 1 | 194 |