Duck Pass to Second Recess

Duck Pass to Second Recess is a 54.7 mile out-and-back backpacking route begins at the Duck Pass Trailhead near Mammoth Lakes and travels deep into the remote heart of the John Muir Wilderness, ending in the dramatic granite cirque of Second Recess. The route follows established trails through alpine lakes, glacial valleys, and along stretches of the iconic Pacific Crest Trail (PCT). This route intersects several trails and offers plenty of opportunities to shorten or extend your trip. Expect sweeping Sierra views, varied terrain, and plenty of opportunities for side exploration.

Start at the Duck Pass Trailhead and climb past a string of sparkling lakes—Arrowhead, Skelton, and Barney—before reaching Duck Lake. From here, continue over Duck Pass and descend toward the PCT.

Turn south on the Pacific Crest Trail and cruise through classic Sierra terrain until you reach the Mono Creek Trail junction. Head east on Mono Creek Trail, gradually descending as the canyon walls grow steeper and more dramatic. After several miles, turn onto the Second Recess Trail, a quieter path that winds its way into a lesser-traveled granite basin.

The official turnaround point is at the end of the Second Recess Trail, but hikers comfortable with off-trail travel can continue south to explore Lower and Upper Mills Lakes—an ideal basecamp surrounded by soaring peaks and rugged granite terrain. From there, explore further or simply soak in the remote beauty before retracing your steps to the Duck Pass Trailhead.
Flora and Fauna
This route spans subalpine forests, alpine meadows, and rocky basins. You’ll pass lodgepole pines, pockets of wildflowers in early summer, and meandering streams that attract deer, marmots, and the occasional black bear. Look for golden eagles soaring high above Second Recess.
Camping and Safety Considerations

• WATER: Water that is collected from streams, rivers, and lakes should be treated before consumption. 

• Camping: Designated sites are available near major lakes, but dispersed camping is allowed following Leave No Trace principles. Lower Mills Lake offers a scenic and secluded option for those comfortable with off-trail travel.

• Bear Canisters: Required for food storage due to high bear activity.

• Mosquitoes can be intense in early summer—bring repellent or a head net.

• This route stays high in elevation; acclimatization is recommended.

Best Season: Late June through early October (depending on snowpack)
PERMITS: Wilderness permits are required for overnight camping throughout the John Muir Wilderness. These permits can be reserved up to six months in advance through www.recreation.gov.