Graham Rahal

The GMR Grand Prix is set to take the green flag at 3:46 p.m. (ET) today on the Indianapolis Motor Speedway road course after lightning and rain in the Indianapolis area forced a delay.

The race will run the scheduled 85 laps or two hours, whichever comes first. The race has been declared a wet start, with all teams starting on Firestone rain tires. The rule requiring use of alternate and primary tires will not be enforced.

Live coverage is underway on NBC, Peacock Premium and the INDYCAR Radio Network. Stay tuned for further updates.