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2013 Calendar
- Sebring International Raceway
U.S.A.
Round 1- 1st
Marcel FässlerOliver JarvisBenoît Tréluyer - 2nd
Lucas Di GrassiTom KristensenAllan McNish - 3rd
Nick HeidfeldNeel JaniNicolas Prost
- Streets of Long Beach
U.S.A.
Round 2- 1st
Klaus GrafLucas Luhr - 2ndNick HeidfeldNeel Jani
- Mazda Raceway Laguna Seca
U.S.A.
Round 3- 1stKlaus GrafLucas Luhr
- 2ndNick HeidfeldNeel Jani
- Lime Rock Park
U.S.A.
Round 4- 1stKlaus GrafLucas Luhr
- 2nd
Chris DysonGuy Smith
- Canadian Tire Motorsport Park
Canada
Round 5- 1stKlaus GrafLucas Luhr
- 2ndTony BurgessChris McMurry
- Road America
U.S.A.
Round 6- 1stKlaus GrafLucas Luhr
- 2ndTony BurgessChris McMurry
- 3rd
Katherine LeggeAndy Meyrick
- Streets of Baltimore
U.S.A.
Round 7- 1stKlaus GrafLucas Luhr
- 2ndChris DysonGuy Smith
- Circuit of the Americas
U.S.A.
Round 8- 1stKlaus GrafLucas Luhr
- 2ndTony BurgessChris McMurry
- Virginia International Raceway
U.S.A.
Round 9- 1stKlaus GrafLucas Luhr
- 2ndJohnny MowlemGuy Smith
- Road Atlanta
U.S.A.
Round 10- 1stNick HeidfeldNeel JaniNicolas Prost
- 2ndTony BurgessChris DysonChris McMurry