2027 U.S. Majors in 2026
@ Buttonwillow Raceway #25cw
AS / GT2 / GT3 / GTX / SP / STL / STU / T2
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Practice D |
AS / GT2 / GTX / SP / SRF / SRF3 / T2
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Group 4 Race Sunday |
AS / GT2 / GTX / SP / T2
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Group 5 Qualifying |
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Group 5 Race |
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Group 5 Qualifying |
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Group 5 Race Sunday |
B-Spec / EP / FP / HP / ITA / SM / SMX / T4
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Practice B |
B-Spec / EP / FP / HP / ITA / T4
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Group 6 Qualifying |
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Group 6 Race |
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Group 6 Qualifying |
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Group 6 Race Sunday |
FA / FC / FE2 / P
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Group 2 Qualifying |
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Group 2 Race |
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Group 2 Qualifying |
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Group 2 Race Sunday |
FF / FFTS / FV / SRF / SRF3
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Practice C |
GT3 / STL / STU
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Group 3 Qualifying |
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Group 3 Race |
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Group 3 Qualifying |
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Group 3 Race Sunday |
sm / SM / SMX / STL
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Group 1 Qualifying |
SRF / SRF3
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Group 4 Qualifying |
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Group 4 Race |
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Group 4 Qualifying |