Marlboro 300
Trenton International Speedway
1.5 Mile Paved Oval
200 Laps/300 Miles
October 3, 1971
| Finish | Start | Driver | Car # | Sponsor/Name | Chassis | Engine | Laps | Status |
Points |
| 1 | 1 | Bobby Unser | 2 | Olsonite | Eagle 71 | Offy TC | 200 | 2:07:51.65 140.771 | 600 |
| 2 | 13 | Mario Andretti | 5 | STP Oil Treatment | McNamara | Ford TC | 198 | Flagged | 480 |
| 3 | 11 | Joe Leonard | 15 | Samsonite | Colt | Ford TC | 197 | Flagged | 420 |
| 4 | 10 | Billy Vukovich, Jr. | 32 | Sugaripe Prune | Hayhoe | Offy TC | 197 | Flagged | 360 |
| 5 | 15 | A. J. Foyt | 9 | ITT-Thompson | Coyote 71 | Ford TC | 196 | Flagged | 300 |
| 6 | 2 | Mark Donohue | 66 | Sunoco | McLaren 71 | Offy TC | 194 | Flagged | 240 |
| 7 | 4 | Steve Krisiloff | 20 | STP Gas Treatment | King | Offy TC | 193 | Flagged | 180 |
| 8 | 14 | Greg Weld | 31 | Federal Engineering | Gerhardt | Offy TC | 193 | Flagged | 150 |
| 9 | 12 | Wally Dallenbach | 22 | Sprite | Kuzma | Offy TC | 191 | Flagged | 120 |
| 10 | 19 | George Eaton | 70 | Fejer Brothers | Colt | Ford TC | 191 | Flagged | 90 |
| 11 | 26 | Cale Yarborough | 21 | Gene White Firestone | Mongoose 70 | Ford TC | 189 | Flagged | 60 |
| 12 | 21 | Mel Kenyon | 23 | Sprite | Kuzma | Ford TC | 188 | Flagged | 30 |
| 13 | 25 | Denny Zimmerman | 40 | STP Keep-Kool Treatment | King | Offy TC | 184 | Flagged | |
| 14 | 16 | George Snider | 4 | G. C. Murphy | Watson | Offy TC | 174 | Flagged | |
| 15 | 28 | Don Brown | 39 | Seymour Enterprises | Seymour | Chevy | 162 | Flagged | |
| 16 | 5 | Swede Savage | 42 | Olsonite | Eagle 70 | Offy TC | 145 | Wrecked | |
| 17 | 3 | Al Unser | 1 | Johnny Lightning 500 | Colt | Offy TC | 134 | Radiator | |
| 18 | 23 | Eldon Rasmussen | 35 | Federal Engineering | Gerhardt | Offy TC | 134 | Wrecked | |
| 19 | 24 | Bill Puterbaugh | 29 | MVS | Cecil | Ford TC | 100 | Wrecked | |
| 20 | 9 | Art Pollard | 8 | Gilmore Racing | Scorpion 70 | Ford TC | 93 | Broken valve | |
| 21 | 27 | Tom Sneva | 79 | Kramer | Kramer | Chevy | 91 | Spindle | |
| 22 | 18 | Roger McCluskey | 6 | Sprite | Kuzma | Ford TC | 87 | Turbo | |
| 23 | 17 | Lloyd Ruby | 12 | Utah Stars | Mongoose 70 | Ford TC | 85 | Broken piston | |
| 24 | 6 | Gary Bettenhausen | 16 | Thermo King | Gerhardt | Offy TC | 77 | Broken throttle link | |
| 25 | 7 | Dick Simon | 10 | TraveLodge Sleeper | Lola | Ford TC | 17 | Spindle | |
| 26 | 22 | Carl Williams | 95 | City of Terre Haute | Eagle | Offy TC | 15 | Turbo | |
| 27 | 8 | Jim McElreath | 3 | Patrick Petroleum | Eagle | Offy TC | 0 | Engine failure | |
| 28 | 20 | Bill Simpson | 28 | Wynn's Kwik Kool | Eagle | Offy TC | 0 | Engine vibration | |
| -- | -- | Karl Busson | 73 | Cavanaugh-Tomlinson | Gerhardt | Chevy | -- | Broken crankshaft, qualifying | |
| -- | -- | Johnny Rutherford | 18 | Patrick Petroleum | X | Offy TC | -- | DNQ, engine trouble | |
| -- | -- | Dick Tobias | X | X | X | X | -- | Did not qualify | |
| -- | -- | Gordon Johncock | 7 | Vollstedt Enterprises | McLaren 70 | Ford TC | -- | Did not qualify | |
| -- | -- | Larry Dickson | 40 | STP Keep-Kool Treatment | King | Offy TC | -- | Driven by D. Zimmerman |
| Lap Leaders | Total | Laps |
| Bobby Unser | 190 | 1-70, 81-200 |
| Al Unser | 10 | 71-80 |