Darlington #1 2021 NASCAR Speed By Segment
| Rank | Driver | Finish | Q1 | Q2 | Q3 | Q4 | Total |
|---|---|---|---|---|---|---|---|
| 1 | Martin Truex Jr | 1 | 3.144 | 2.51 | 2.229 | 1.499 | 2.346 |
| 2 | Denny Hamlin | 5 | 2.66 | 1.731 | 0.771 | 0.152 | 1.329 |
| 3 | Joey Logano | 13 | 1.975 | 1.709 | 0.594 | 0.498 | 1.194 |
| 4 | Kyle Busch | 3 | 1.184 | 1.376 | 1.135 | 1.079 | 1.194 |
| 5 | Kyle Larson | 2 | 1.573 | 0.804 | 0.918 | 1.345 | 1.16 |
| 6 | Kevin Harvick | 6 | 2.511 | 0.397 | 1.002 | 0.262 | 1.043 |
| 7 | William Byron | 4 | 1.256 | 1.711 | 0.63 | 0.52 | 1.029 |
| 8 | Tyler Reddick | 12 | 2.579 | 1.436 | 0.236 | -0.19 | 1.015 |
| 9 | Ryan Blaney | 8 | 1.559 | 1.398 | 0.437 | -0.107 | 0.822 |
| 10 | Christopher Bell | 14 | 0.446 | 0.525 | 1.851 | 0.385 | 0.802 |
| 11 | Chase Elliott | 7 | 0.526 | 1.207 | 0.411 | 0.229 | 0.593 |
| 12 | Chris Buescher | 9 | 0.379 | 0.805 | 0.672 | 0.413 | 0.567 |
| 13 | Alex Bowman | 17 | 0.558 | 1.264 | -0.563 | -0.065 | 0.299 |
| 14 | Ryan Newman | 10 | 0.29 | 0.649 | -0.496 | -0.024 | 0.105 |
| 15 | Erik Jones | 18 | 0.114 | 0.396 | 0.071 | -0.23 | 0.088 |
| 16 | Chase Briscoe | 11 | -0.297 | -0.05 | -0.047 | -0.114 | -0.127 |
| 17 | Bubba Wallace | 21 | 0.053 | -0.179 | -0.643 | 0.247 | -0.131 |
| 18 | Austin Dillon | 16 | -0.339 | -0.358 | 0.216 | -0.246 | -0.182 |
| 19 | Ricky Stenhouse Jr | 20 | -0.766 | -1.123 | 1.012 | -0.108 | -0.246 |
| 20 | Corey Lajoie | 22 | -0.557 | -0.398 | -0.409 | -0.685 | -0.512 |
| 21 | Matt DiBenedetto | 19 | 0.801 | -0.452 | -1.113 | -1.638 | -0.601 |
| 22 | Michael McDowell | 27 | -0.54 | -1.391 | -0.064 | -0.41 | -0.601 |
| 23 | Ryan Preece | 25 | -0.745 | -1.126 | -0.473 | -0.852 | -0.799 |
| 24 | Anthony Alfredo | 26 | -1.728 | -1.057 | -0.559 | -0.091 | -0.859 |
| 25 | Ross Chastain | 15 | -1.342 | -2.63 | 0.202 | 0.215 | -0.889 |
| 26 | Brad Keselowski | 24 | 0.036 | -0.843 | 0.694 | -3.554 | -0.917 |
| 27 | Daniel Suarez | 23 | -2.551 | -4.012 | -0.725 | -0.882 | -2.043 |
| 28 | Justin Haley | 28 | -1.458 | -1.308 | -2.119 | -5.749 | -2.659 |
| 29 | JJ Yeley | 29 | -1.789 | -2.531 | -3.181 | -3.178 | -2.67 |
| 30 | Quin Houff | 30 | -2.694 | -2.321 | -2.237 | -3.511 | -2.691 |
| 31 | James Davison | 31 | -4.328 | -3.04 | -3.333 | -3.591 | -3.573 |
| 32 | BJ McLeod | 32 | -3.13 | -1.819 | -4.539 | -5.297 | -3.696 |
| 33 | Josh Bilicki | 33 | -4.331 | -3.587 | -4.773 | -6.094 | -4.696 |
| 34 | Cody Ware | 34 | -2.776 | -3.447 | -0.601 | ||
| 35 | Kurt Busch | 35 | 0.036 | -0.07 | |||
| 36 | Cole Custer | 36 | -0.292 | -3.995 | |||
| 37 | Aric Almirola | 37 | -0.729 |
