#32-Kyle Larson was fastest during the opening practice at Pocono Raceway with a speed of 166.670mph. #17-Timothy Peters was second, followed by #20-Justin Lofton, #31-Ben Kennedy, #3-Austin Dillon, #29-Ryan Blaney, #05-John Wes Townley, #51-Erik Jones, #19-Tyler Reddick, and #88-Matt Crafton. 30 drivers practiced during the session. See complete results on the Pocono practice 1 speeds page (pdf).
