What is the top speed in NASCAR racing?

The top speed in NASCAR racing is approximately 200 miles per hour (322 kilometers per hour). This speed is typically reached on the straightaways of large oval tracks, such as the Daytona International Speedway or the Talladega Superspeedway. However, the average speed of a NASCAR race is much lower, due to the fact that drivers must slow down for corners and other obstacles on the track. The slowest speeds in NASCAR racing are typically recorded on road courses, such as the Sonoma Raceway or the Watkins Glen International, where the average speed is around 80 miles per hour (129 kilometers per hour).