Knob Hill Grapevine Lake features 10 miles of hiking trails near Grapevine, TX.
Take 114 to 377. Turn north on 377 and start looking for a small dirt parking lot and the trailhead on the east side of the road. If you get to FM 1171 you have gone to far and you need to turn around and go .4 miles back. Just up the road on FM 1171 is the Northshore Trail.
http://www.tripleblaze.com/trail.php?c=3&i=1440