If you're looking for this type of information it is available at the Superbike World Championship Official Site http://www.motonline.com/superbike/
It is a little hard to find the track/circuit information but it is there. If you use the above URL when you get there, click the flag along the top for the current round (British flag, even says "Brands Hatch" as you position the mouse over it.) Then along the left there should be an entry that says "2001 Championship" and under that "Calendar and Circuit". If you click that "Calendar and Circuit" you get the calendar, and each even has a link for the track, which if you click will give you the track length, current lap record holders. Past winners can be found elsewhere.
As I said already, its there, but not very easy to follow. Most race preview stories list this kind of information, so I usually wait until I read one of those. I think a picture of the track layout would also be helpful.