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1968 Calendar
- Autódromo Hermanos Rodríguez
Mexico
Round 1- 1st
Moisés Solana - 2ndSkip Scott
- 3rdPeter Revson
- Riverside International Raceway
U.S.A.
Round 2- 1stMark Donohue
- 2ndLothar Motschenbacher
- 3rdSam Posey
- Laguna Seca
U.S.A.
Round 3- 1stMark Donohue
- 2ndLothar Motschenbacher
- 3rdJim Hall
- Bridgehapmton Race Circuit
U.S.A.
Round 4- 1stSkip Scott
- 2ndChuck Parsons
- 3rdJohn Cordts
- St. Jovite, Mont Tremblant
Canada
Round 5- 1stMark Donohue
- 2ndJohn Cannon
- 3rdLothar Motschenbacher
- Watkins Glen International
U.S.A.
Round 7- 1stMark Donohue
- 2ndChuck Parsons
- 3rdGeorge Eaton
- Road America
U.S.A.
Round 8
- Mid-Ohio Sports Car Course
U.S.A.
Round 9