Sonoma 2021 Green Flag Speeds
| Rank | Driver | Finish | Green Flag Speed |
|---|---|---|---|
| 1 | Kyle Larson | 1 | 88.928 |
| 2 | Martin Truex Jr | 3 | 88.744 |
| 3 | Kyle Busch | 5 | 88.545 |
| 4 | Chase Elliott | 2 | 88.482 |
| 5 | Brad Keselowski | 15 | 88.269 |
| 6 | Kurt Busch | 6 | 88.226 |
| 7 | Ross Chastain | 7 | 88.202 |
| 8 | Alex Bowman | 9 | 88.116 |
| 9 | Ryan Blaney | 10 | 88.103 |
| 10 | William Byron | 35 | 88.086 |
| 11 | Kevin Harvick | 22 | 87.984 |
| 12 | Denny Hamlin | 8 | 87.91 |
| 13 | Michael McDowell | 28 | 87.895 |
| 14 | Joey Logano | 4 | 87.893 |
| 15 | Chris Buescher | 16 | 87.886 |
| 16 | Christopher Bell | 24 | 87.833 |
| 17 | Erik Jones | 11 | 87.663 |
| 18 | Daniel Suarez | 12 | 87.645 |
| 19 | Matt DiBenedetto | 23 | 87.531 |
| 20 | Ryan Preece | 21 | 87.431 |
| 21 | Austin Dillon | 13 | 87.369 |
| 22 | Aric Almirola | 27 | 87.369 |
| 23 | Cole Custer | 20 | 87.343 |
| 24 | Chase Briscoe | 17 | 87.271 |
| 25 | Tyler Reddick | 19 | 87.271 |
| 26 | Corey Lajoie | 18 | 87.263 |
| 27 | Ricky Stenhouse Jr | 37 | 87.159 |
| 28 | Ryan Newman | 33 | 86.888 |
| 29 | Bubba Wallace | 14 | 86.857 |
| 30 | Anthony Alfredo | 31 | 86.844 |
| 31 | James Davison | 25 | 86.463 |
| 32 | Josh Bilicki | 29 | 86.223 |
| 33 | Ben Rhodes | 30 | 86.156 |
| 34 | Cody Ware | 34 | 85.894 |
| 35 | Scott Heckert | 26 | 85.877 |
| 36 | Quin Houff | 36 | 85.345 |
| 37 | Garrett Smithley | 32 | 83.626 |
