George Atlas wrote:
I know it is a smaller stadium but Indy always is packed for every track National Championship.
Through the wonder of the internet, I can report that, in 2006, Indy drew 34,000 folks total over four days to a stadium that holds 12,000.
This was almost the same as Des Moines 2010, where 33,000 showed up for the four days, capacity 14,000.
From discussion at Track and Field News, the last previous nationals in Indy before 2006 was 1997 and the attendance was very bad.
However, from the same discussion, when Indy hosted meets in the 1980s, attendance was in fact fabulous.