This is a multi-use trail, used by hikers and horses, although this one is mainly traveled by mountain bikers. Be respectful!
Virtually all the local mountain bikers know this trail well. It's a 16 mile out and back with some very technical areas and some steep climbs. There are several very exposed sections (well marked with caution signs). It's very hot in the summer but still a great ride.
The trail follows along the Lake and drops back and forth into creek areas and then back out to the ridges along the lake. It's very rocky trail in some areas, with flowing singletrack in other areas.
The start of this trail is a bit scary and exposed. Several riders have gone for a spill down the hill to the lake (or the catch fence). Walk your bike if you''re uncertain (I do).
You can't get lost on this trail - it's straight out and back and only two sections deviate off the trail. At about mile 3 there's a split in the trail with a lower and upper trail. The upper trail is best on the way out and the lower is the best on the way back. If you take the upper on the way out it turns into a rocky fire road - watch for a trail sign on your left leading you back to the singletrack (it's the second left).
The two lefts are very close together and easy to spot. At mile 7.5 you'll drop back onto a fire road and it's a good climb to the turnaround for the trail. The turnaround is marked by a sign indicating Darrington Trail back the way you just came and is on a large flat spot with fire roads heading in three directions.
Return the way you came on a high speed run down the fire road, and watch for the singletrack rising to the left of the road. Follow this until you get to the next fire road (several miles) and you'll enter and leave the fire road on the right side (or you can go for the steep climb up the road).