This 4.6-mile out-and-back climbs to a group of backcountry lakes tucked below the Continental Divide.

This easy trail passes through rolling grasslands and wetlands to a scenic highpoint overlooking the Front Range. Good for winter rides and cycle-cross training.

Rocky scrambles and a knife-edge ridge lead up one of the most challenging Fourteeners. Stellar views over the untamed Elk Range are endless.

This popular, and moderately challenging, 4.7-miler climbs through mixed forest and over talus fields to lofty views of Colorado Springs, the eastern plains, and Pikes Peak.

Tour a rock garden of giant proportions on this 4.8-mile loop, passing towering redrock monoliths, golden hillsides, and views of Pikes Peak.

Quiet rules on this mostly off-trail, 5.1-mile scramble up a boulder strewn canyon to a gnarly rocky crown with panoramic mountain views in Pike National Forest.

Bag two peaks on this 9-mile, fido-friendly loop around Boulder's signature Flatirons.

Ascend North America's tallest dunes for a day surrounded by alpine peaks, a desert valley, and shifting mountains of sand on this 6.6-mile loop in America's newest national park.

Hike into the core of Indian Peaks Wilderness on this 13.6-mile overnight, which leads past waterfalls to a sunbleached valley and a sweet lakeside campsite.

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.