This ambitious 5.6-miler climbs more than 3,000 feet through mountain meadows, past a quiet lake, to a summit with far-away views over the Gallatin Range.

Climb the rocky guardian of the northern Gallatin Range on this 10-mile out-and-back to a skyline full of lofty pinnacles.

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.

Ride Amtrak to Glacier's back door, then hike this 19.7-miler past glacial lakes and cascades and over two gorgeous passes.

Hike over three mountain passes into glacier-carved basins with crystalline lakes and bird's-eye views on this 17.6-mile loop. Don't forget your camera.

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.

This 13.9-mile backcountry getaway features a secluded mountain lake, countless stream crossings, and views across untouched wilderness.

This 7.1-mile dayhike in Lewis and Clark National Forest loops through the Highwood Mountains, skirting several creeks and the broad summit of Windy Mountain.

This 20.6-mile out-and-back in the northern reaches of Yellowstone National Park culminates with panoramic views from the rocky crown of Electric Peak.

Trace Specimen Creek to two backcountry lakes and tour remote mountain landscapes on this solitary, 22.5-mile trek in Yellowstone National Park.