From the gate, follow the singletrack off to the left. It should make a turn up the hill, and start heading towards a big grassy field. Look towards your left in the bushes, and very quickly you should see a trail that drops into the trees there. Hit that! It is an amazing section of trail that swoops up and down in the gully. Afterwards, just keep following the singletrack. The singletrack will join the ski trail occaisionally, but there is a well-worn route to follow. Just keep following it, and follow any signage. There is a downhill-type trail that spurs off the furthest corner of the main cross country loop, if you wanna hit it.
So yeah, just follow the trail all the way around the mound, and you'll get back to the start. Sprinkled around on the trail there are a see-saw, some very fun bridges, and drops and jumps on the downhill section. Enjoy!