The Indianapolis Motor Speedway is the largest sporting facility in the world. Its bleachers contain over 257,000 permanent seats, and when additional infield spectator seats are added, the Speedway can hold over 400,000 people.
More Bleachers Trivia:
Why is there a single bleacher seat in Boston's Fenway Park that is painted red?
The seat painted red in the bleachers marks the spot where Ted Williams hit the longest home run in Fenway Park history.