Four 15-lap heat races will be held on Saturday, March 27, for both the Cup and Truck series races to determine the starting lineups for each main race.<br>The Cup series heat races will begin at 6 p.m. ET, with the Truck series heat races beginning at 4:30 p.m. ET and the main Truck race at 8 p.m. ET.<br>The Truck series has run one dirt series race each season from 2013 through the 2019 seasons ...<a class='more' href='https://www.motorsport.com/nascar-cup/news/heat-races-bristol-dirt-track/5482397/?utm_source=RSS&utm_medium=referral&utm_campaign=R SS-NASCAR&utm_term=News&utm_content=www'>Keep reading</a>

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