<Li> The new date that Las Vegas Motor Speedway acquired from New Hampshire Motor Speedway was moved to the first race of playoffs to replace Overton's 400 at Chicagoland Speedway which moved back to July before the Coke Zero 400 . That means the Coke Zero 400, Quaker State 400 and New Hampshire 301 will move one week later than 2017 . </Li> <Li> The 25th Annual Big Machine Brickyard 400 at Indianapolis Motor Speedway will move to September to become the final race of the regular season while the Federated Auto Parts 400 at Richmond Raceway will move to the second race in the Round of 16 . </Li> <Li> The Bank of America 500 at Charlotte Motor Speedway will move one week earlier to become the elimination race of the Round of 16 and will utilize the track's road course layout instead of its quad - oval . The race's scheduled distance will also be shortened from 500 miles to 500 kilometers . That means the Dover 400 (fall) at Dover International Speedway will move one week later to become the first race of the Round of 12 . </Li> <Li> In broadcasting changes, an additional off week in June was added for the Father's Day weekend between Michigan and Sonoma so that the Fox networks could air the U.S. Open . The third off week will be after Bristol's August race . </Li>

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