Depends on the level of cover.
Sorry its 4 days, you have an approved trackday operator list but its pretty extensive and you also have to inform the company when you attend an event.
10% excess (minimum of £500) on any accidental damage or fire
I am with Reis, anyway, the point of thread is more overall costs without getting into the bun fight that is insurance
Just for your own car or someone else's too if you happen to take someone out with you?