Walked from the end of the trail on Collingwood Drive to Forest Bluff Trail and back. Another time, I'd go the oposite direction, for parking. The trail is all ashfault; wide and flat, with a nice setting among trees. 1.5 miles from one end to the other. Nice secluded feel, even though you can hear the cars on route 79. Met several friendly people out walking their dogs or jogging. There are several nice picnic tables with small cooking grills along the riverside, and a playground for kids near the Forest Bluff entrance.
Nice for a Round Rock trail. Not connected up to full length yet but what is there is nice and wooded.