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.
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..
In 2012, Dale Jr. led 358 laps in the Nascar Cup Series. He also led 33 laps in the Nationwide Series.
To be an official Nascar race, the drivers must complete 100 of 200 laps. Once lap 101 begins, it's an official race.
None, Jr races NASCAR not Indy.
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.
Dale Jr. has led 427 laps at Richmond International Raceway in Cup Series races and 605 laps in Nationwide Series races (formerly called the Busch Series).
For the 2011 Nascar Sprint Cup Series season, Brad Keselowski led 298 laps.
Through the 2013 season, Dale Jr. has led 7,464laps in his Nascar Cup Series career.