Kansas #2 2021 Green Flag Speeds
| Rank | Driver | Finish | Green Flag Speed |
|---|---|---|---|
| 1 | William Byron | 6 | 169.023 |
| 2 | Kyle Larson | 1 | 168.943 |
| 3 | Chase Elliott | 2 | 168.779 |
| 4 | Kurt Busch | 4 | 168.747 |
| 5 | Kevin Harvick | 3 | 168.498 |
| 6 | Martin Truex Jr | 7 | 168.131 |
| 7 | Denny Hamlin | 5 | 168.123 |
| 8 | Tyler Reddick | 22 | 167.917 |
| 9 | Alex Bowman | 11 | 167.851 |
| 10 | Christopher Bell | 8 | 167.757 |
| 11 | Joey Logano | 9 | 167.4 |
| 12 | Bubba Wallace | 14 | 167.396 |
| 13 | Ross Chastain | 13 | 167.31 |
| 14 | Ryan Blaney | 37 | 167.229 |
| 15 | Austin Dillon | 10 | 167.119 |
| 16 | Brad Keselowski | 17 | 167.027 |
| 17 | Chris Buescher | 12 | 166.888 |
| 18 | Cole Custer | 18 | 166.808 |
| 19 | Chase Briscoe | 19 | 166.54 |
| 20 | Parker Kligerman | 20 | 166.539 |
| 21 | Matt DiBenedetto | 23 | 166.394 |
| 22 | Ryan Newman | 27 | 166.359 |
| 23 | Erik Jones | 29 | 166.308 |
| 24 | Ryan Preece | 21 | 166.234 |
| 25 | Aric Almirola | 26 | 166.223 |
| 26 | Daniel Suarez | 15 | 166.071 |
| 27 | Michael McDowell | 16 | 165.946 |
| 28 | Ricky Stenhouse Jr | 24 | 165.767 |
| 29 | Kyle Busch | 28 | 165.713 |
| 30 | Corey Lajoie | 25 | 165.617 |
| 31 | Anthony Alfredo | 38 | 164.873 |
| 32 | Justin Haley | 39 | 163.732 |
| 33 | BJ McLeod | 30 | 161.851 |
| 34 | Cody Ware | 31 | 161.167 |
| 35 | David Starr | 34 | 160.275 |
| 36 | Josh Bilicki | 33 | 159.726 |
| 37 | Joey Gase | 32 | 159.671 |
| 38 | Quin Houff | 35 | 158.467 |
| 39 | Ryan Ellis | 36 | 157.776 |
| 40 | Chad Finchum | 40 | 156.455 |
