The 2005 Sirius Satellite Radio at The Glen was the 22nd stock car race of the 2005 NASCAR Nextel Cup Series season and the 20th iteration of the event.

The race was extended from 90 to 92 laps due to a green–white–checker finish caused by an accident including Kurt Busch and Jorge Goeters in the bus stop.

It was long known around the world as the home of the Formula One United States Grand Prix, which it hosted for twenty consecutive years (1961–1980), but the site has been home to road racing of nearly every class, including the World Sportscar Championship, Trans-Am, Can-Am, NASCAR Sprint Cup Series, the International Motor Sports Association and the IndyCar Series.

The circuit's current layout has more or less been the same since 1971, although a chicane was installed at the uphill Esses in 1975 to slow cars through these corners, where there was a fatality during practice at the 1973 United States Grand Prix.

[3] Tony Stewart of Joe Gibbs Racing would set the fastest time in the session with a lap of 1:12.264 and an average speed of 122.052 miles per hour (196.424 km/h).