Shambala Festival

I've just been given some free tickets for Shambala (hurrah) but with a marathon looming in 3 weeks time, I need to do a 22 mile run at some point over the weekend.

Could anyone please advise me on any safe routes around the area? I don't mind running around the site if it's a reasonable size but have no idea and can't seem to get the information online. Oh ...and I get lost very easily!