How many left turns are made during the Indy 500 race?

Answer 1

0, u don't turn since you're on a curved track.

800 is a better answer. The track is 2.5 miles long so the race is 200 laps. From the Indy 500 website:

The track has four distinct turns and straightaways, a layout unchanged since the facility opened in 1909. The front and back straightaways are 5/8th of a mile each, with the "short chute" straightaways between Turns 1 and 2 and Turns 3 and 4 at 1/8th of a mile each. Each of the four turns is 1/4th of a mile long.

4x200 = 800 turns, all to the left.