#18-Kyle Busch was fastest during the only practice at Kentucky Speedway with a speed of 182.389mph.
The rest of the top 10: #12-Ryan Blaney, #33-Brandon Jones, #42-Tyler Reddick, #20-Erik Jones, #48-Brennan Poole, #21-Daniel Hemric, #3-Ty Dillon, #22-Joey Logano, and #41-Kevin Harvick.
All 43 drivers practiced during the session.
See complete results on the Kentucky practice speeds page (pdf).
