I attend the 500 every year, and I went to the Indy Grand Prix last year.

Initially after reading the question, I considered answering by suggesting many of us in Indiana aren't close enough to many of the tracks on their schedule. However, I thought about it and realized Road America, Gateway, Detroit, and Mid-Ohio are all reasonably close. I know some on here aren't fond of road courses, so that knocks a few of those tracks out of their options, but I don't feel the same way, so maybe I'll have to get to one of them this season.