Finney Peak can be reached via several routes, though they are mostly overgrown and difficult to traverse.
Map & Directions
From Twisp: Head west on the Twisp River Road for about 10 miles. Turn left onto West Buttermilk Creek Road. At the first fork in the road, turn left onto East Buttermilk Creek Road. At the second fork in the road, veer right to continue on East Buttermilk Creek Road and travel 3.5 miles before taking a right onto Road 500. Follow this road almost 3 miles to the trailhead.