About 90 minutes to the green flag (assuming the weather cooperates).
Race details:
Green Flag: 7:30pm/et
NBC, MRN, SiriusXM NASCAR
160 laps / 400 miles
Stages: 50–100–160
Comp Caution: Lap 20
Est. time of race: 3:15:16
Fuel window: 40 laps
Pit road speed: 55 mph