- 2021 FireKeepers Casino 400 Results Stock Car Online Results Reference
- 2021 FireKeepers Casino 400 Results Stock Car Online Results Reference
| fin | qual | driver | team | laps led | car | sponsor | pts | laps | status |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 3 | Ryan Blaney | Team Penske | 8 | #12 Ford Mustang | Menards\Cardell Cabinetry | 40 | 200 | Finish |
| 2 | 18 | William Byron | Hendrick Motorsports | 18 | #24 Chevy Camaro | Axalta | 43 | 200 | Finish |
| 3 | 1 | Kyle Larson | Hendrick Motorsports | 70 | #5 Chevy Camaro | Cincinnati | 51 | 200 | Finish |
| 4 | 6 | Kurt Busch | Chip Ganassi Racing | 1 | #1 Chevy Camaro | Monster Energy | 36 | 200 | Finish |
| 5 | 9 | Denny Hamlin | Joe Gibbs Racing | 10 | #11 Toyota Camry | FedEx Express | 45 | 200 | Finish |
| 6 | 4 | Matt DiBenedetto | Wood Brothers Racing | 1 | #21 Ford Mustang | Master Tech \ Quick Lane | 36 | 200 | Finish |
| 7 | 7 | Kyle Busch | Joe Gibbs Racing | 13 | #18 Toyota Camry | Interstate Batteries | 42 | 200 | Finish |
| 8 | 2 | Chase Elliott | Hendrick Motorsports | 68 | #9 Chevy Camaro | NAPA Auto Parts | 46 | 200 | Finish |
| 9 | 20 | Brad Keselowski | Team Penske | 6 | #2 Ford Mustang | Discount Tire | 33 | 200 | Finish |
| 10 | 5 | Martin Truex Jr | Joe Gibbs Racing | 0 | #19 Toyota Camry | Auto-Owners Insurance | 27 | 200 | Finish |
| 11 | 21 | Chase Briscoe | Stewart-Haas Racing | 0 | #14 Ford Mustang | Rush Truck Centers / Cummins | 26 | 200 | Finish |
| 12 | 12 | Ricky Stenhouse Jr | JTG Daugherty Racing | 0 | #47 Chevy Camaro | Kroger/Maxwell House | 25 | 200 | Finish |
| 13 | 28 | Christopher Bell | Joe Gibbs Racing | 3 | #20 Toyota Camry | Rheem | 33 | 200 | Finish |
| 14 | 8 | Kevin Harvick | Stewart-Haas Racing | 0 | #4 Ford Mustang | Busch Light Apple | 23 | 200 | Finish |
| 15 | 11 | Chris Buescher | RFK Racing | 0 | #17 Ford Mustang | Castrol | 22 | 200 | Finish |
| 16 | 10 | Alex Bowman | Hendrick Motorsports | 0 | #48 Chevy Camaro | Ally | 21 | 200 | Finish |
| 17 | 23 | Aric Almirola | Stewart-Haas Racing | 0 | #10 Ford Mustang | Smithfield | 20 | 200 | Finish |
| 18 | 13 | Erik Jones | Legacy Motor Club | 0 | #43 Chevy Camaro | Medallion Bank | 19 | 200 | Finish |
| 19 | 15 | Bubba Wallace | 23XI Racing | 0 | #23 Toyota Camry | McDonald's | 18 | 200 | Finish |
| 20 | 25 | Michael McDowell | Front Row Motorsports | 0 | #34 Ford Mustang | Martin Transportation Systems | 17 | 200 | Finish |
| 21 | 32 | Ryan Preece | JTG Daugherty Racing | 0 | #37 Chevy Camaro | Entenmann's | 16 | 200 | Finish |
| 22 | 30 | Daniel Suárez | Trackhouse Racing | 0 | #99 Chevy Camaro | CommScope | 15 | 200 | Finish |
| 23 | 27 | Cole Custer | Stewart-Haas Racing | 0 | #41 Ford Mustang | Feeding America/Wow Wow | 14 | 200 | Finish |
| 24 | 16 | Ryan Newman | RFK Racing | 0 | #6 Ford Mustang | ITsavvy | 13 | 200 | Finish |
| 25 | 17 | Justin Haley | Spire Motorsports | 0 | #77 Chevy Camaro | General Formulations / Mutoh | 0 | 200 | Finish |
| 26 | 24 | Josh Berry | Spire Motorsports | 0 | #7 Chevy Camaro | Nations Guard | 0 | 200 | Finish |
| 27 | 37 | Cody Ware | Rick Ware Racing | 0 | #51 Chevy Camaro | Nurtec ODT Chevrolet | 0 | 199 | Finish |
| 28 | 36 | BJ McLeod | Live Fast Motorsports | 0 | #78 Ford Mustang | Keen Parts | 0 | 198 | Finish |
| 29 | 14 | Tyler Reddick | Richard Childress Racing | 0 | #8 Chevy Camaro | Chevy Accessories | 11 | 198 | Finish |
| 30 | 31 | Quin Houff | StarCom Racing | 0 | #00 Chevy Camaro | YMCA/CREEK | 7 | 196 | Finish |
| 31 | 29 | Josh Bilicki | Rick Ware Racing | 0 | #52 Ford Mustang | Zeigler Auto Group | 6 | 195 | Finish |
| 32 | 33 | Garrett Smithley | Rick Ware Racing | 0 | #53 Chevy Camaro | Kendall Motor Oil | 0 | 194 | Finish |
| 33 | 19 | Joey Logano | Team Penske | 0 | #22 Ford Mustang | Shell Pennzoil | 9 | 188 | DVP |
| 34 | 35 | Anthony Alfredo | Front Row Motorsports | 0 | #38 Ford Mustang | The Golden Nugget Casino.com | 3 | 178 | Finish |
| 35 | 22 | Ross Chastain | Chip Ganassi Racing | 0 | #42 Chevy Camaro | Moose Fraternity | 2 | 152 | Finish |
| 36 | 26 | Austin Dillon | Richard Childress Racing | 2 | #3 Chevy Camaro | BREZTRI | 14 | 120 | Accident |
| 37 | 34 | Joey Gase | Rick Ware Racing | 0 | #15 Chevy Camaro | Lisa Foundation | 0 | 29 | Accident |