Track: Road America, Elkhart Lake (United States), 6.437 kms

Lista zgłoszeń.

Pre-race sessions:
2 non-qualifying practice sessions held for a total of 60 minutes on 2/9
1 qualifying session held for a total of 45 minutes on 3/9

Winners:

Overall:    10    McLaren Elva Mark II Chevrolet    Chuck Parsons
Sports Racing - Class E:    7    Porsche 906    Buzzetta / Klass
Sports Racing - Class G:    67    Elva Mk VII    Scott / Ross
Pole Positions:

Overall:    97    McLaren Elva Mark II Chevrolet    Hayes / Jones    2:26.200    
Sports Racing - Class E    11    Ferrari Dino 206 S    Charlie Kolb    2:31.800    
Notes of interest:

Top makes by numbers:    Elva (7), Porsche (6), McLaren (5), Ferrari (3), Lotus (3)
Top engines by numbers:    Chevrolet (12), Porsche (7), Ford (5), Ferrari (3), BMW (2), Climax (2), Oldsmobile (2)
Top car types by numbers:    Porsche 906 (5), McLaren Elva Mark II (4), Lola T70 (2), Elva Mk VIII (2), Elva Mk VII (2), McKee Mk.6 (2)
Driver nationalities:    USA (67)
Team nationalities:    USA (38)
Engine positions:    middle-engined (85%), front-engined (15%)
Oldest known drivers:    Jack Ensley (60), M. R. J. Wyllie (47), Chuck Parsons (42)
Youngest known drivers:    Mike Fisher (23), John Morton (24), Peter Revson (27)
Woman drivers:    Denise McCluggage

Klasyfikacja generalna.