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 held on Sunday, August 14, 2005 in Watkins Glen, New York before a crowd of 85,000 at the shortened layout of Watkins Glen International, a 2.454 miles (3.949 km) permanent road course. 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. At race's end, Tony Stewart of Joe Gibbs Racing would defend his domination of the race on the final restart to win his 24th career NASCAR Nextel Cup Series win and his fifth of the season. To fill out the podium, Robby Gordon of Robby Gordon Motorsports and Boris Said of MB Sutton Motorsports would finish second and third, respectively.

The 2005 GFS Marketplace 400 was the 23rd stock car race of the 2005 NASCAR Nextel Cup Series season and the 36th iteration of the event. The race was held on Sunday, August 21, 2005, in Brooklyn, Michigan at Michigan International Speedway, a two-mile permanent moderate-banked D-shaped speedway. The race took the scheduled 200 laps to complete. After a caution on lap 144, drivers would use many different fuel strategies to get to the end, including pitting and trying to stretch a fuel run, a gas and go, or two or four tires. Jeremy Mayfield of Evernham Motorsports would top off on fuel on Lap 149, and would take the lead on lap 195 after many leaders had to pit due to running out of fuel. Mayfield would conserve and coast to the line to win his fifth and final NASCAR Nextel Cup Series career win and his only win of the season. To fill out the podium, Scott Riggs of MBV Motorsports and Matt Kenseth of Roush Racing would finish second and third, respectively.