You read it wrong.
Not all the tracks, just all of the ones I bought!
I had Watkins Glen (which I figured would get use since IndyCar, NASCAR and Grand Am) and VIR (plenty of combos and good reviews so i fugred it must be good for somthing) which, when combined with the circuits they give you, use to be enough to run 4 weeks in the Star Mazda and 2 or 3 in the Radical. As it was when I re-subscribed yesterday I could only run one week of Star Mazdas at Okayama, but i missed it because I subscribed mid season. Also missed the one week I could run the Radical, which was suprisingly at Watkins Glen.
Meh, I guess iRacing is uber-realistic in the sense that you need to pump lots of money into it to run a full season.