2.6 hr
The Quarry Trail starts at Highway 49 just uphill from the Auburn Confluence and ends in a trail junction above Maine Bar. The route is a gently rolling doubletrack that provides some pleasant views as it follows along the Middle Fork of the American River. The way is mostly shaded, and you'll enjoy the cooler temperatures of the north facing slope.
An enjoyable hike along the Middle fork of American River, with many great spots for fly fishing