William Byron posted a fast lap of 45.901 seconds, 204.587 mph to lead Friday’s practice session for the 62nd running of the Daytona 500.
The practice was the first since last Saturday and followed up Sunday’s qualifying session and Thursday night’s Bluegreen Vacations Duel, where Byron won Race 2.
The final practice session is set for Saturday at 12:30 p.m ET, live on the Motor Racing Network.
Click to View Practice Results at NASCAR.com
Best 10 Consecutive Lap Average
| Pos | Car | Driver | From Lap | To Lap | Avg Speed |
| 1 | 19 | Martin Truex Jr. | 17 | 26 | 200.195 |
| 2 | 11 | Denny Hamlin | 15 | 24 | 200.170 |
| 3 | 95 | Christopher Bell # | 16 | 25 | 200.150 |
| 4 | 18 | Kyle Busch | 15 | 24 | 200.146 |
| 5 | 20 | Erik Jones | 16 | 25 | 199.966 |
| 6 | 6 | Ryan Newman | 6 | 15 | 199.866 |
| 7 | 12 | Ryan Blaney | 6 | 15 | 199.850 |
| 8 | 41 | Cole Custer # | 6 | 15 | 199.842 |
| 9 | 38 | John Hunter Nemechek # | 5 | 14 | 199.834 |
| 10 | 17 | Chris Buescher | 6 | 15 | 199.830 |
| 11 | 22 | Joey Logano | 6 | 15 | 199.830 |
| 12 | 21 | Matt DiBenedetto | 6 | 15 | 199.829 |
| 13 | 36 | David Ragan | 5 | 14 | 199.828 |
| 14 | 13 | Ty Dillon | 16 | 25 | 199.380 |
| 15 | 24 | William Byron | 18 | 27 | 199.345 |
| 16 | 48 | Jimmie Johnson | 19 | 28 | 199.280 |
| 17 | 9 | Chase Elliott | 22 | 31 | 199.263 |
| 18 | 8 | Tyler Reddick # | 17 | 26 | 199.209 |
| 19 | 34 | Michael McDowell | 1 | 10 | 199.169 |
| 20 | 2 | Brad Keselowski | 1 | 10 | 199.160 |
| 21 | 77 | Ross Chastain | 4 | 13 | 196.473 |
| 22 | 37 | Ryan Preece | 1 | 10 | 196.421 |
| 23 | 47 | Ricky Stenhouse Jr. | 1 | 10 | 196.156 |
| 24 | 43 | Bubba Wallace | 1 | 10 | 196.034 |
| 25 | 16 | Justin Haley | 3 | 12 | 180.825 |
