This 14.6-mile out-and-back meanders past lodgepole pine, towering peaks, and a waterfall on its way to a backcountry campsite at the foot of the Tetons.

Leave the big pack behind and take this easy 2-mile loop at Colter Bay for spectacular views of Jackson Lake and several surrounding peaks.

Navigate boulder fields, rocky ridgelines, and seasonal snowfields during this long, challenging ascent of the third-highest peak in the Tetons.

Towering peaks, alpine lakes, and rugged canyons highlight this challenging, 21.7-mile backcountry trek in Grand Teton National Park.

This challenging, 18.1-mile backcountry trek wanders the rugged canyons, alpine lakes, and scree fields of Grand Teton National Park.

Ditch the roadside crowds on this family-friendly, 4.1-mile out-and-back to an indigo lake framed by the mighty Tetons. Bring binocs: Songbirds abound.

Explore the park's new Rockefeller Preserve on this 3-mile loop that traces the southern shore of Phelps Lake and reveals striking views of the Tetons.

This 7-mile mountain bike loop climbs past spectacular views of the Tetons and the Snake River Valley, then descends on singletrack through aspens and pines.

With its hissing fumaroles, bubbling mudpots, and propellant geysers, this short boardwalk loop at Fountain Paint Pot serves as a greatest-hits collection of Yellowstone's geothermal wonders.

A must-do hike in Yellowstone National Park, this easy 4.8-miler leads to Lone Star Geyser, a backcountry spout that shoots a 45-foot fountain of water into the air.