#29-Ryan Blaney was fastest during the opening practice at Chicagoland Speedway with a speed of 175.234mph. #13-Jeb Burton was second, followed by #51-Erik Jones, #54-Darrell Wallace, Jr., #98-Johnny Sauter, #20-Austin Dillon, #9-Brennan Newberry, #21-Joey Coulter, #77-German Quiroga, and #05-John Wes Townley. 27 drivers practiced during the session. See complete results on the Chicagoland practice 1 speeds page (pdf).
