The route to Mount Formidable is a Class 4 and requires exposed scrambling. Gear and experience recommended.
Map & Directions
Drive Hwy 20 to the little town of Marblemount. Keep going straight when 20 turns left and you will be on Cascade River Road. Drive the 23 miles to the end. You will follow the Cascade River the whole way; it takes nearly an hour on Cascade River Road.