Rnd | Date | Circuit | Distance | Over 2.5 Winning Car | Under 2.5 Winning Car |
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Over 2.5 Winning Driver(s) | Under 2.5 Winning Driver(s) |
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1 | May 6 | Lime Rock Park, Lakeville, Connecticut | 130.05 mi (209.30 km) (U2L) 200.43 mi (322.56 km) (O2L) | AMC Javelin | Datsun 510 |
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George Follmer | Bob Sharp |
2 | May 29 | Bryar Motorsports Park, Loudon, New Hampshire | 112 mi (180 km) (U2L) 152 mi (245 km) (O2L) | AMC Javelin | Datsun 510 |
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George Follmer | John Morton |
3 | June 4 | Mid-Ohio Sports Car Course, Lexington, Ohio | 120 mi (190 km) (U2L) 180 mi (290 km) (O2L) | Pontiac Firebird | Datsun 510 |
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Milt Minter | Peter Gregg |
4 | June 17 | Watkins Glen International, Watkins Glen, New York | 114.818 mi (184.782 km) (U2L) 192.489 mi (309.781 km) (O2L) | AMC Javelin | Datsun 510 |
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George Follmer | Peter Gregg |
5 | July 2 July 4 | Donnybrooke International Speedway, Brainerd, Minnesota | 150 mi (240 km) (U2L) 210 mi (340 km) (O2L) | AMC Javelin | Alfa Romeo GTV |
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George Follmer | Horst Kwech |
6 | July 16 | Road America, Elkhart Lake, Wisconsin | 108 mi (174 km) (U2L) 200 mi (320 km) (O2L) | Ford Mustang | Datsun 510 |
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Warren Tope | John Morton |
7 | July 30 | Sanair Super Speedway, Saint-Pie, Quebec | 104 mi (167 km) (U2L) 169 mi (272 km) (O2L) | Ford Mustang | Alfa Romeo GTA |
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Warren Tope | Bert Everett |
8 | August 19 | Road Atlanta, Braselton, Georgia | 126 mi (203 km) | not contested | Datsun 510 |
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John Morton |
9 | September 17 | Portland International Raceway, Portland, Oregon | 105.325 mi (169.504 km) | not contested | Datsun 510 |
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John Morton |
10 | October 15 | Laguna Seca Raceway, Monterey, California | 102.5 mi (165.0 km) | not contested | Datsun 510 |
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John Morton |
11 | October 28 | Riverside International Raceway, Riverside, California | 127.5 mi (205.2 km) | not contested | Datsun 510 |
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John Morton |
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