Thanks to only a little elevation gain, this 7-mile loop offers flatlanders great rewards (big views, wildlife, solitude) without much suffering. Pack plenty of water and sunscreen.

Rushing waterfalls, mountainous views, and a healthy dose of altitude highlight this 6.3-mile loop in Rocky Mountain National Park.

This 5.9-mile loop is great for eager flatlanders who are acclimating to the thin Rocky Mountain air.

Waterfalls, alpine lakes, and mind-blowing scenery. It's all included on this 9.1-mile out-and-back hike in Rocky Mountain National Park.

Go counterclockwise on this 10.2-mile loop touring the rocky cliffs and odd-shaped boulders of Lumpy Ridge to an alpine lake and several campsites in Rocky Mountain National Park.

Connect subalpine waterfalls, gurgling creeks, and overlooks above Wild Basin on this 5.3-miler in Rocky Mountain National Park.

Amble along rushing creeks, waterfalls, and lichen-covered rock outcroppings on the way to a secluded alpine lake in Rocky Mountain National Park's Wild Basin.

This 8.1-mile hike skirts wind-scoured lakes and scrambles up the edge of a waterfall before arriving at Sky Pond, where crumbling spires stretch 2,000 feet into the air.

Summit a lesser-traveled 13,000-foot peak, then catch some summer alpine fishing at Timber Lake on this 13.4-mile out-and-back.

Climb 2,400 feet to twin peaks on Rocky Mountain National Park's east side. Aspen-shaded trails and unobstructed views of Longs Peak are just two rewards of this 7.2-mile out-and-back.