Ok then start at the pavilion. Go on the yellow trail, going clockwise.
Still on yellow, cross that little bridge, stay to your left, and slight climb up. Then come to the start/end of the orange trail.
Take that right onto orange. Climb up, go down. Cross the bridge over the stream. Quick left at the end of the bridge then quick right to follow orange, up up up the switchbacks.
Once you get back onto flat ground, you'll come to a very hard left onto purple. This is the start/end of purple. Ride this whole trail. It climbs at first, then goes down, then up, then crosses a camp road, then flat, and ends.
At the end, take a left, up the hill. This brings you to a fire road intersection. Cross the fire road, going back onto yellow. Down switchbacks then into the far little parking lot. Stay on yellow the whole time.
Now it gets a little trickier in here, so you can just as soon stay on yellow the whole way back. The actual race course would be like this, but it's a difference of a 1/2 mile of trail at most:
Once you cross the far parking lot, you'll climb a little hill and at the crest of it there will be a right trail. Left will be the yellow. Go right. This will immediately go through some rocks and exposed roots. Then a short steep climb of maybe 50 feet, trail curves right, and flattens out into really smooth singletrack for 1/4 mile or less. At the end of this, bang a left. This is like a jeep road width. Stay on this for 100 yards or so then run back into the yellow trail, onto which you turn right. Continue on yellow all the way back to the pavilion.
If you can follow that you know LM pretty friggin well.