The 2004 GFS Marketplace 400 was the 23rd stock car race of the 2004 NASCAR Nextel Cup Series season and the 35th iteration of the event. The race was held on Sunday, August 22, 2004, before a crowd of 160,000 in Brooklyn, Michigan at Michigan International Speedway, a two-mile (3.2 km) permanent moderate-banked D-shaped speedway. The race took the scheduled 200 laps to complete. At race's end, Greg Biffle of Roush Racing would run away with the race, passing teammate Mark Martin to win his second career NASCAR Nextel Cup Series win and his first of the season. To fill out the podium, Dale Jarrett of Robert Yates Racing would finish third.

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. The race was held on Sunday, August 15, 2004, in Watkins Glen, New York at the shortened layout of Watkins Glen International, a 2.454 miles permanent road course. The race took the scheduled 90 laps to complete. At race's end, a sick Tony Stewart, driving for Joe Gibbs Racing, would be able to overcome sickness and soiling himself during the race, defending against Ron Fellows of Dale Earnhardt, Inc. to win his 19th career NASCAR Nextel Cup Series win and his second and final win of the season. To fill out the podium, Mark Martin of Roush Racing would finish third.