None, Jr races NASCAR not Indy.
155
09 Indy has not been run and Dale Jr does not race Indy cars
In 2008, Jimmie Johnson led 1,959 laps.
The Indy 500 - or the Indianapolis 500-Mile Race consists of 200 laps. The circuit consists of an asphalt track with four turns.
Through 2013, Danica Patrick has led 64 laps in the Nascar Nationwide Series. She also led five laps in the Cup Series.
Dale Jr. led 14 laps in the Nationwide Series race on July 4, 2008 at Daytona.
2008 will the the 92nd running of the Indy 500
Darrell Waltrip led 103 laps in 1974.
Jimmie Johnson led 2,238 laps in 2009.
'They' is not defined as a specific group of people.
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.