This strenuous 11.3-mile loop offers a bit of everything--rugged summits, challenging trails, dense woodlands, mountain streams, remote campsites, and heaps of solitude.

Discover ancient archaeology and island isolation (playful sea lions excepted) on this 5.2-mile loop through Santa Rosa's steep canyons and sandy beaches.

This 5.6-mile loop climbs the woody spine of Dick's Ridge, then meanders along a twisting mountain stream in a hilly section of Chattahoochee National Forest.

Hike up two mountain peaks with eye-popping vistas on this challenging 7.4-mile off-trail route on the park's lesser-traveled east side.

Epic, glacial-era geology and rugged mountain views from the Continental Divide are the highlights of this 4- or 5-day point-to-point in Glacier National Park's northwest corner.

A classic trek in Glacier National Park, this 14.7-miler crosses the Continental Divide, skirts turquoise pools, and skims wildflower fields.

Pass through some of the wildest land in the Lower 48 on this stout 11.3-mile route that offers a wildlife showcase of grizzlies, mountain lions, moose, and wolverines.

Explore seasonal waterfalls, mellow woods, and a large quarry on this moderate 4.5-mile loop along the relatively steep flanks of Monte Sano Mountain.

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.

Find your inner hermit on this 26.3-mile loop in George Washington National Forest, complete with endless scenery, heaps of wildlife, and oh-so-quiet campsites.