This race features two 50 lap segments and one final segment of 13 laps. This is gonna be good night for racing....
http://www.nascar.com/en_us/news-media/articles/2016/5/6/2016-sprint-all-star-race-format-charlotte-motor-speedway.html
http://www.nascar.com/en_us/news-media/articles/2016/5/6/2016-sprint-all-star-race-format-charlotte-motor-speedway.html