The slowest tracks are Sonoma Raceway, a road course with a record average speed of only 83.6 mph (134.5 km/h) and a record qualifying lap of 99.3 mph (159.8 km/h), and Martinsville Speedway, a short, nearly flat "paper clip" oval, with a record average speed of 82.2 mph (132.3 km/h) and a record qualifying lap of 99.9 mph (160.8 km/h).
Trek yang paling lambat adalah Sonoma Raceway dengan rekor kecepatan rata-rata hanya 83,6 mph (134,5 km/jam) dan rekor putaran kualifikasi 99,3 mph (159,8 km/jam) serta Martinsville Speedway yang termasuk trek pendek hampir datar yang punya layout mirip "penjepit kertas" dengan rekor kecepatan rata-rata 82,2 mph (132,3 km/jam) dan rekor putaran kualifikasi 99,9 mph (160,8 km/jam).WikiMatrix WikiMatrix