This route is an epic journey through the upper reaches of several major drainages between Rock Creek and Mammoth Lakes. It's all single track for the entirety of the 33 miles and much of the trail is narrow, rocky, technical and in some places nonexistent. It takes you over several spectacular passes staying above 10,000ft for most of the route. Mono, Hopkins, McGee, and Duck pass all provide incredible views and their own unique adventures and stringing them all together makes for ~8,000 ft* of ascent on the day.