Mineral Wash-Bill Williams River Trail is a 16.2 mile point-to-point trail located near Parker, Arizona and is rated as moderate. The trail is primarily used for off road driving and is accessible year-round. 16.2 miles Point to Point off road driving Hide Map AllTrails Terrain Road Satellite Expand Map Sign up now to see this map! ReviewsPhotosTracksNo one has reviewed this trail yet. Be the first!