The spectator areas for the race are the Parker Python (main pit). Shea road (along the road and further down on the left and then all the way to the road closed sign), you need a pit pass to get to the pit at midway (Swansea road out of Bouse).
Here is a link for the information on spectator areas. It does not show the back which has a map of each area.
http://www.bitd.com/images/stories/p...ctatorInfo.pdf
Enjoy the race!