Mt. Washington & Santiam Pass Scenic Byway on February 26, 2015 Get link Facebook X Pinterest Email Other Apps An 82 miles long, McKenzie Pass–Santiam Pass Scenic Byway offers a gorgeous landscape to drive through. McKenzier-Santian Pass Scenic BywayRoute 20 - Black Butte on backgroundRoute 20Route 20Pine trees after 2003 firePine trees after 2003 fireFrom Route 20 There is a viewpoint for Mt. Wahsington:Mt. Washington ViewpointViewpointMt. Washington Mt. WashingtonViewpoint