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Skoalbandit33
Guest
Iowa has had 25-30,000 permanent seats and increased up to 60,000 with temporary seating for their first Nationwide race in 2009. I would imagine it wouldn't be hard for IRP to do the same if they really wanted.
30K in attendance may end up being the norm for a lot of races in the coming years. I think Bristol held about 36K when I first attended.