Mountain Biking/Trailbreak.co.uk

I know there are a few mtn bikers out there...Anyone do these trailbreak fat tyre rides? I'm planning to do the one on the 12th dec round my neck of the woods after a lapse of some 3 years (riding against the clock not riding per se). I'm rather hoping that my local knowledge will see me in good stead - previously i'm sure most delays ensue due to having to stop to read maps!