To be an official Nascar race, the drivers must complete 100 of 200 laps. Once lap 101 begins, it's an official race.
334 laps/500 miles
Kyle Busch led 2,229 laps in the 2010 Nascar Nationwide Series.
In 2011, Joey Logano led 58 laps in the Nascar Sprint Cup Series.
On official size tracks, the answer is 4 laps make a mile when your jogging 4 laps make a mile
In 2008, Jimmie Johnson led 1,959 laps.
In 2012, Kasey Kahne led 282 laps in the Nascar Cup Series, 106 laps in the Nationwide Series and 46 laps in the Truck Series..
The number of laps in a NASCAR race varies depending on the size of the track, and the distance raced. It will usually say something about it in the name of the race. For example, the Daytona 500 is 500 miles. They race 200 laps. Click on the link below for more information on different Nascar tracks.
In 2012, Dale Jr. led 358 laps in the Nascar Cup Series. He also led 33 laps in the Nationwide Series.
None, Jr races NASCAR not Indy.
7.5 laps
Unless there is a green-white-checkered finish, the Nascar Sprint Cup Series race at Las Vegas Motor Speedway is scheduled for 267 laps (400.5 miles). The Nationwide Series race is 200 laps (300 miles) and the Camping World Truck Series race is 146 laps (219 miles).
In 2011, Dale Jr. led 52 laps in the Nascar Sprint Cup Series.