Slinkard Valley is a 10.7 mile moderately trafficked out and back trail located near Topaz, California. The trail is rated as moderate and primarily used for hiking and mountain biking. 10.7 miles 1158 feet Out & Back hiking mountain biking Expand Map VIEW FULL MAP Sign up now to see this map! Reviews (0)Photos (0)Recordings (0)No one has reviewed this trail yet. Be the first!