This 5-mile loop winds through an undisturbed swath of parkland to babbling creeks and fine views across the San Fernando Valley to the San Gabriel Mountains.

The 9.2-mile trek heads along one of California's last pristine beaches to the swimming grounds of harbor seals and the once-endangered California gray whale.

GUMBOOT TRAILHEAD to CA 3: High in the Trinity Alps, this 32.9-mile ridge section views the headwaters of the Trinity River and countless alpine lakes.

CA 3 to CARTER MEADOWS SUMMIT: Pass rocky lake basins and deep, glacially scoured canyons on this 18.5-mile leg across the slim ridges of the Scott Mountains.

This 9.6-mile overnight in the Russian Wilderness is pine-studded, alpine lake-riddled, and in-your-dreams beautiful.

Basecamp in a rarely visited basin and take daytrips to several alpine lakes with stunning views on this 17.2-mile, long-weekend backpacking trip.

Wander through a remote paradise of high-alpine lakes in the lightly visited Trinity Alps on this 33.2-mile, long-weekend trip in Klamath National Forest.

Trek 24.4 miles to a 200-foot, glacier-fed waterslide, then bag the highest peak in the Trinity Alps. Bring a fly rod for rare red-meat brook trout.

Unspoiled black-sand beaches, rogue breakers, and craggy mountains form a remote backdrop to this 13.4-mile weekend adventure along the Lost Coast.

A lakeside campsite awaits at the end of this 4.2-miler that passes old-growth cedars, a mining camp, and meadows splashed with wildflowers.