
NASCAR Practice Speeds, Notes, and Lap Averages. Use these NASCAR stats and info to build lineups on DraftKings for the the 2025 Grant Park 165 at the Chicago Street Course. Bubba Wallace was fastest in the session.
The NASCAR Cup Series ran a single practice session at the Chicago Street Course on Saturday afternoon in preparation for the upcoming Grant Park 165 on Sunday afternoon.
The 41-car field was split in to two groups for practice, with each group getting 25 minutes on track.
Cup will practice in two groups 25 minutes apiece. And then qualifying in groups, one round. The slowest of the five open cars (Heim Brown Legge Hill Bilicki) won’t make field. 1p ET on TruTV. pic.twitter.com/K3mFj5FLYb
— Bob Pockrass (@bobpockrass) July 5, 2025
Below you will find the two groups, key notes from the practice session, as well as the practice speeds for all drivers.
Important Practice Notes
Denny Hamlin - It didn't take long for there to be a major happening in practice. In the opening minute or two, the engine in Denny Hamlin's No. 11 Toyota blew, causing the red flag to come out. NASCAR eventually added more time for the first group to practice but Hamlin didn't get any practice time and won't be able to qualify.
Not the way the No. 11 wanted to start the weekend. pic.twitter.com/o02lnJFG7M
— NASCAR (@NASCAR) July 5, 2025
William Byron - The No. 24 Chevrolet was very impressive in practice, but Byron got into the wall late and caused enough damage that he won't be able to post a qualifying lap for this race. He will start in the rear of the field on Sunday.
Chase Elliott - Late in practice, Chase Elliott got into the wall pretty hard. Like Byron, he won't be able to make a lap in qualifying and will have to start from the rear on Sunday.
Alex Bowman - Another Hendrick Motorsports driver with issues was Alex Bowman, who broke his toe link after hitting the wall in practice. The No. 48 team looked to be able to fix it before qualifying.
2025 Chicago Street Course Grant Park 165 Practice Speed Chart
Click here to download the PDF of the practice speed chart.
Pos | Driver | Time | Speed | Fastest Lap | Laps Ran | Behind Leader |
1. | Bubba Wallace | 90.951 | 87.080 | 3 | 14 | ---.--- |
2. | William Byron | 91.006 | 87.027 | 7 | 8 | -0.055 |
3. | Chase Elliott | 91.072 | 86.964 | 9 | 10 | -0.121 |
4. | Ty Gibbs | 91.092 | 86.945 | 4 | 14 | -0.141 |
5. | Michael McDowell | 91.263 | 86.782 | 5 | 11 | -0.312 |
6. | Carson Hocevar | 91.364 | 86.686 | 3 | 6 | -0.413 |
7. | Shane Van Gisbergen | 91.375 | 86.676 | 4 | 12 | -0.424 |
8. | Chris Buescher | 91.427 | 86.627 | 4 | 15 | -0.476 |
9. | Tyler Reddick | 91.435 | 86.619 | 3 | 8 | -0.484 |
10. | Brad Keselowski | 91.513 | 86.545 | 4 | 14 | -0.562 |
11. | Alex Bowman | 91.549 | 86.511 | 5 | 9 | -0.598 |
12. | Will Brown | 91.637 | 86.428 | 9 | 10 | -0.686 |
13. | Ryan Preece | 91.638 | 86.427 | 8 | 15 | -0.687 |
14. | Noah Gragson | 91.679 | 86.388 | 4 | 9 | -0.728 |
15. | Kyle Larson | 91.703 | 86.366 | 4 | 9 | -0.752 |
16. | Zane Smith | 91.761 | 86.311 | 6 | 12 | -0.810 |
17. | AJ Allmendinger | 91.766 | 86.307 | 10 | 10 | -0.815 |
18. | Ryan Blaney | 91.868 | 86.211 | 7 | 10 | -0.917 |
19. | Christopher Bell | 91.914 | 86.168 | 5 | 9 | -0.963 |
20. | Ross Chastain | 91.985 | 86.101 | 3 | 12 | -1.034 |
21. | Corey Heim | 92.005 | 86.082 | 5 | 12 | -1.054 |
22. | Todd Gilliland | 92.067 | 86.024 | 5 | 9 | -1.116 |
23. | Erik Jones | 92.088 | 86.005 | 3 | 11 | -1.137 |
24. | John Hunter Nemechek | 92.173 | 85.925 | 4 | 8 | -1.222 |
25. | Kyle Busch | 92.179 | 85.920 | 3 | 13 | -1.228 |
26. | Austin Hill | 92.193 | 85.907 | 5 | 11 | -1.242 |
27. | Chase Briscoe | 92.285 | 85.821 | 8 | 11 | -1.334 |
28. | Austin Cindric | 92.321 | 85.788 | 4 | 9 | -1.370 |
29. | Austin Dillon | 92.371 | 85.741 | 7 | 13 | -1.420 |
30. | Riley Herbst | 92.387 | 85.726 | 9 | 10 | -1.436 |
31. | Cole Custer | 92.634 | 85.498 | 8 | 10 | -1.683 |
32. | Ricky Stenhouse Jr. | 92.648 | 85.485 | 4 | 11 | -1.697 |
33. | Joey Logano | 92.761 | 85.381 | 4 | 11 | -1.810 |
34. | Daniel Suarez | 92.843 | 85.305 | 4 | 7 | -1.892 |
35. | Ty Dillon | 92.877 | 85.274 | 2 | 12 | -1.926 |
36. | Josh Bilicki | 93.665 | 84.557 | 4 | 9 | -2.714 |
37. | Justin Haley | 93.716 | 84.511 | 6 | 7 | -2.765 |
38. | Josh Berry | 93.769 | 84.463 | 6 | 12 | -2.818 |
39. | Katherine Legge | 94.076 | 84.187 | 8 | 9 | -3.125 |
40. | Cody Ware | 94.738 | 83.599 | 3 | 9 | -3.787 |
41. | Denny Hamlin | 0.000 | 0.000 | 0 | 0 | 0.000 |
2025 Chicago Street Course Grant Park 165 10-Lap Average Chart
Pos | Driver | From Lap | To Lap | Avg Speed |
1. | Michael McDowell | 2 | 11 | 86.538 |
2. | Ty Gibbs | 3 | 12 | 86.276 |
3. | Bubba Wallace | 3 | 12 | 86.136 |
4. | Chris Buescher | 2 | 11 | 85.999 |
5. | Ryan Preece | 3 | 12 | 85.995 |
6. | Brad Keselowski | 2 | 11 | 85.694 |
7. | Kyle Busch | 1 | 10 | 85.432 |
8. | Shane Van Gisbergen | 3 | 12 | 84.748 |
9. | Ross Chastain | 3 | 12 | 84.116 |
10. | Josh Berry | 2 | 11 | 83.511 |
11. | Austin Hill | 2 | 11 | 81.349 |
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