Race Result
| GP n. 149 - 02/10/1966 - Grand Prix of the United States Watkins Glen International |
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| Winner: | Jim Clark / Lotus-BRM - 2:09'40.11 | ||||||
| Pole Position: | Jack Brabham / Brabham-Repco - 1:08.42 | ||||||
| Fastest Lap: | John Surtees / Cooper-Maserati - 1:09.67 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 1 |  Jim Clark |
Lotus-BRM | 108 | 2:09'40.11 | 2 | 9 |
| 2 | 8 |  Jochen Rindt |
Cooper-Maserati | 107 | out of fuel | 9 | 6 |
| 3 | 7 | John Surtees |
Cooper-Maserati | 107 | + 1 lap | 4 | 4 |
| 4 | 19 |  Jo Siffert |
Cooper-Maserati | 105 | + 3 laps | 13 | 3 |
| 5 | 17 |  Bruce McLaren |
McLaren-Ford | 105 | + 3 laps | 11 | 2 |
| 6 | 2 | Peter Arundell |
Lotus-Climax | 101 | + 7 laps | 19 | 1 |
| Nc | 12 |  Richie Ginther |
Honda | 81 | not classified | 8 | 0 |
| Nc | 22 |  Jo Bonnier |
Cooper-Maserati | 57 | not classified | 15 | 0 |
| Dsq | 16 | Bob Bondurant |
Eagle-Climax | 5 | disqualified | 16 | 0 |
| Ret | 10 | Innes Ireland |
BRM | 96 | alternator | 17 | 0 |
| Ret | 18 | Mike Spence |
Lotus-BRM | 74 | ignition | 12 | 0 |
| Ret | 14 | Ronnie Bucknum |
Honda | 58 | engine | 18 | 0 |
| Ret | 5 |  Jack Brabham |
Brabham-Repco | 55 | engine | 1 | 0 |
| Ret | 4 | Jackie Stewart |
BRM | 53 | engine | 6 | 0 |
| Ret | 3 | Graham Hill |
BRM | 52 | differential | 5 | 0 |
| Ret | 9 |  Lorenzo Bandini |
Ferrari | 34 | engine | 3 | 0 |
| Ret | 6 | Denny Hulme |
Brabham-Repco | 18 | engine | 7 | 0 |
| Ret | 15 | Dan Gurney |
Eagle-Weslake | 13 | clutch | 14 | 0 |
| Ret | 11 |  Pedro Rodriguez |
Lotus-BRM | 13 | retirement | 10 | 0 |