Excellent trails.
Take Highway 2 east to the town of Waterville, Washington. Before entering town, take a right onto Waterville South Road. Turn right off this road onto Titchenal Canyon Road. Follow the road for 2 miles, and turn left at the top. Duffy Creek entrance is on the left.
http://www.tripleblaze.com/trail.php?c=3&i=8241