NASCAR Cup Series Practice at Las Vegas Motor Speedway
Ty Gibbs led the practice with a speed of 181.733mph, completing 36 laps.
William Byron was the fastest playoff driver, showing the best long-run speed with his fastest lap at 181.172mph. He was also fastest in the 5, 10, 15, 20, 25, and 30-lap averages.
- Chase Elliott: 180.953mph
- Denny Hamlin: 180.741mph
- Bubba Wallace: 180.560mph
- Tyler Reddick: 180.475mph
- Chase Briscoe: 180.385mph
- Ross Chastain: 180.288mph
Author's summary: Ty Gibbs leads NASCAR practice.