Las Vegas #1 2021 Green Flag Speeds
| Rank | Driver | Finish | Green Flag Speed |
|---|---|---|---|
| 1 | Kyle Larson | 1 | 174.718 |
| 2 | Brad Keselowski | 2 | 174.694 |
| 3 | Ryan Blaney | 5 | 174.384 |
| 4 | Denny Hamlin | 4 | 174.383 |
| 5 | William Byron | 8 | 174.363 |
| 6 | Alex Bowman | 27 | 174.215 |
| 7 | Martin Truex Jr | 6 | 174.01 |
| 8 | Christopher Bell | 7 | 173.982 |
| 9 | Kyle Busch | 3 | 173.804 |
| 10 | Chase Elliott | 13 | 173.804 |
| 11 | Joey Logano | 9 | 173.333 |
| 12 | Matt DiBenedetto | 16 | 173.168 |
| 13 | Kurt Busch | 19 | 173.109 |
| 14 | Erik Jones | 10 | 172.953 |
| 15 | Ricky Stenhouse Jr | 11 | 172.937 |
| 16 | Austin Dillon | 12 | 172.841 |
| 17 | Chris Buescher | 14 | 172.78 |
| 18 | Kevin Harvick | 20 | 172.656 |
| 19 | Ryan Preece | 15 | 172.451 |
| 20 | Bubba Wallace | 28 | 172.261 |
| 21 | Michael McDowell | 17 | 172.241 |
| 22 | Ross Chastain | 23 | 172.173 |
| 23 | Ryan Newman | 18 | 172.151 |
| 24 | Tyler Reddick | 22 | 172.102 |
| 25 | Aric Almirola | 38 | 172.088 |
| 26 | Chase Briscoe | 21 | 171.83 |
| 27 | Anthony Alfredo | 24 | 171.44 |
| 28 | Cole Custer | 25 | 171.097 |
| 29 | Corey Lajoie | 37 | 170.686 |
| 30 | Daniel Suarez | 26 | 170.398 |
| 31 | Justin Haley | 29 | 168.886 |
| 32 | Cody Ware | 32 | 167.226 |
| 33 | BJ McLeod | 30 | 167.165 |
| 34 | Garrett Smithley | 31 | 167.089 |
| 35 | Quin Houff | 33 | 165.929 |
| 36 | Joey Gase | 34 | 162.816 |
| 37 | Josh Bilicki | 35 | 162.654 |
| 38 | Timmy Hill | 36 | 158.74 |
