28–30 Apr | ![]() |
Auto Club Speedway![]() |
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18–21 May | ![]() |
Road America![]() |
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22–25 Jun | ![]() |
Mid-Ohio Sports Car Course![]() |
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27–30 Jul | ![]() |
Portland International Raceway![]() |
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21–24 Sep | ![]() |
Virginia International Raceway![]() |
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