<P> Stock car races take place predominantly on oval tracks of 3 or 4 turns , with all turns to the left . Oval tracks are classified as short track ( less than 1 mile ) , intermediate or speedway ( 1 to 2 miles ) or superspeedway ( over 2 miles ) . Road courses are any tracks having both left and right turns . Depending on the track , typical race speeds can vary from 90 miles per hour ( 140 km / h ) at Martinsville to over 200 miles per hour ( 320 km / h ) at Talladega . In 1987 Bill Elliott 's 212.809 mph ( 342.483 km / h ) qualifying time at Talladega brought about a change at superspeedways ( Daytona and Talladega ) . Such high speeds and Bobby Allison 's car going airborne into the catch - fence and injuring fans forced NASCAR to implement power - reducing measures , one of which was the mandated implement of below carburetor restrictor plates . This later became known as restrictor plate racing . </P>
<P> Stock car races take place predominantly on oval tracks of 3 or 4 turns , with all turns to the left . Oval tracks are classified as short track ( less than 1 mile ) , intermediate or speedway ( 1 to 2 miles ) or superspeedway ( over 2 miles ) . Road courses are any tracks having both left and right turns . Depending on the track , typical race speeds can vary from 90 miles per hour ( 140 km / h ) at Martinsville to over 200 miles per hour ( 320 km / h ) at Talladega . In 1987 Bill Elliott 's 212.809 mph ( 342.483 km / h ) qualifying time at Talladega brought about a change at superspeedways ( Daytona and Talladega ) . Such high speeds and Bobby Allison 's car going airborne into the catch - fence and injuring fans forced NASCAR to implement power - reducing measures , one of which was the mandated implement of below carburetor restrictor plates . This later became known as restrictor plate racing . </P>
what is the average speed of a nascar race car
what is the average speed of a nascar race car
from 90 miles per hour ( 140 km / h ) at Martinsville to over 200 miles per hour ( 320 km / h ) at Talladega
from 90 miles per hour ( 140 km / h ) at Martinsville to over 200 miles per hour ( 320 km / h ) at Talladega