NASCAR heads to the desert this weekend for the 2024 Shriners Children’s 500 Cup Series in Avondale, Arizona. ET Sunday with NASCAR RaceDay on FOX, followed by the Shriners Children’s 500 at 3:30 p.m. William Byron won last year’s race at Phoenix Raceway, beating Larson in overtime to win his second straight NASCAR Cup Series race. Sunday’s event marks the 54th race hosted by Phoenix Raceway in the series’ history. Phoenix Raceway is 1 mile long and will require drivers to complete 312 laps around the track.