The 2023 FireKeepers Casino 400 was a NASCAR Cup Series race held on August 6 and 7, 2023, at Michigan International Speedway in Brooklyn, Michigan. Contested over 200 laps on the  D-shaped oval, it was the 23rd race of the 2023 NASCAR Cup Series season. The race began on Sunday, August 6, before rain delayed it to Monday, August 7, after 74 laps were complete.

Report

Background

The race was held at Michigan International Speedway, a  moderate-banked D-shaped speedway located in Brooklyn, Michigan. The track is used primarily for NASCAR events. It is known as a "sister track" to Texas World Speedway as MIS's oval design was a direct basis of TWS, with moderate modifications to the banking in the corners, and was used as the basis of Auto Club Speedway. The track is owned by International Speedway Corporation. Michigan International Speedway is recognized as one of motorsports' premier facilities because of its wide racing surface and high banking (by open-wheel standards; the 18-degree banking is modest by stock car standards).

Entry list
 (R) denotes rookie driver.
 (i) denotes the driver ineligible for series driver points.

Practice
Martin Truex Jr. was the fastest in the practice session with a time of 37.496 seconds and a speed of .

Practice results

Qualifying
Christopher Bell scored the pole for the race with a time of 37.232 and a speed of .

Qualifying results

Race
Martin Truex Jr. swept the stages, but Chris Buescher, driving for RFK Racing, would overtake him in the closing laps to win the race, marking the first time since 2010 where a Roush driver won consecutive Cup series races. Rounding out the top five would be Truex's JGR teammate Denny Hamlin, RFK's Brad Keselowski, and Kyle Larson of Hendrick Motorsports.

Race results

Stage results

Stage One
Laps: 45

Stage Two
Laps: 75

Final Stage results

Stage Three
Laps: 80

Race statistics
 Lead changes: 26 among 16 different drivers
 Cautions/Laps: 9 for 43 laps
 Red flags: 1 for 19 hours, 5 minutes, and 18 seconds
 Time of race: 3 hours, 2 minutes, and 59 seconds
 Average speed:

Media

Television
USA covered the race on the television side. Rick Allen, Jeff Burton, Steve Letarte and Dale Earnhardt Jr. called the race from the broadcast booth. Kim Coon, Parker Kligerman and Marty Snider handled the pit road duties from pit lane on Sunday. Kim Coon and Marty Snider handled the pit road duties on Monday.

Radio
Radio coverage of the race was broadcast by Motor Racing Network (MRN) and simulcast on Sirius XM NASCAR Radio. Alex Hayden and Jeff Striegle called the race in the booth while the field was racing on the front stretch. Dave Moody called the race from a billboard outside of turn 2 when the field is racing through turns 1 and 2. Mike Bagley called the race from a platform outside of turn 3 when the field races through turns 3 and 4. Steve Post, Chris Wilner and Jason Toy worked pit road for the radio side.

Standings after the race

Drivers' Championship standings

Manufacturers' Championship standings

Note: Only the first 16 positions are included for the driver standings.
. – Driver has clinched a position in the NASCAR Cup Series playoffs.

Notes

References

FireKeepers Casino 400
FireKeepers Casino 400
NASCAR races at Michigan International Speedway
FireKeepers Casino 400