Kutokana na meza hii ya mbio na tarehe, jinsi mbio nyingi ulifanyika baada ya Julai? Toa jibu ukiwa na namba.
Context:Round mzunguko Tarehe 1 Mzunguko wa Marekani wa Amerika, Elroy, Texas Machi 2 hadi 3 2 Marekani Virginia International Raceway, Alton, Virginia 27-28 Aprili 3 Canada Canadian Tire Motorsport Park, Bowmanville, Ontario 18-19 Mei 4 Marekani Sonoma Raceway, Sonoma, California 8<unk>9 Juni 5 Marekani Watkins Glen International, Watkins Glen, New York 31 Agosti-1 Septemba 6 Barabara ya Marekani ya Amerika, Elkhart Lake, Wisconsin 21 22 Septemba 7 Marekani Las Vegas Motor Speedway, Las Vegas, Nevada 19-20 Oktoba
3 (mbili)