This Saturday, drivers will compete in two All-Star Heat races to determine their starting lineup for the main event. The heat races take place at 5:10 p.m. ET on FS2 and MRN Radio, with SiriusXM NASCAR Radio as the broadcast partner.
The first heat race will be followed by the second heat race. Once both heats are complete, the drivers will pit to set their lineup for Sunday night’s All-Star Race, which airs at 8 p.m. ET on FS1, MRN Radio, and SiriusXM.
Source: https://www.nascar.com/news-media/2025/05/16/2025-north-wilkesboro-speedway-pit-stall-assignments