It's a little complicated Art. Being private property, there's liability issues (we're working with the Scout Camp to come up with an amicable solution), but we've been told that if anyone wants to ride, they need to ring the phone number on the gate (I don't know it off hand) and just ask for permission. Shouldn't really be a problem. If no-one answers, just lift your bike over the gate and go for it.
The course isn't marked yet, but it's only a small area and difficult to get lost. The trails are everywhere. Strava has them all marked. The gates to access the Beaconsfield Nature Reserve section of the race course aren't open except for the weekend of the race.