The 2004 Sirius at The Glen was the 22nd stock car race of the 2004 NASCAR Nextel Cup Series season and the 19th iteration of the event.

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.

[5] Jeff Gordon of Hendrick Motorsports would set the fastest time in the session, with a lap of 1:12.034 and an average speed of 122.442 miles per hour (197.051 km/h).

[5] Robby Gordon of Richard Childress Racing would set the fastest time in the session, with a lap of 1:11.652 and an average speed of 123.095 miles per hour (198.102 km/h).