Hike or ride smooth singletrack on this 7.2-mile lasso-loop, which climbs gently through rich scrubland and ponderosa forest to a killer mountainside overlook.

Cruise 5.2 miles along gentle foothills, Ireland-esque pastures, and past an old sawmill to a vista overlooking Boulder Canyon and the Front Range.

Trek up sparsely-covered slopes and a broad talus ridge in the Sawatch Range to an overlook with endless alpine vistas.

String together three Sawatch summits on this popular circuit with long alpine traverses overlooking the Continental Divide.

It's a scholarly debate on which summit--Mount Columbia or Mount Harvard--is the best. So reserve a long weekend to climb both in the Collegiate Peaks Wilderness, and decide for yourself.

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.

Hike lonely trails filled with Yosemite-like granite formations in Lost Creek Wilderness on this 15.4-mile out-and-back up the Retirement Range's highest peak.

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.

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.

Follow this 9.9-mile loop through vibrant wildflower displays and past snow-fed streams to a huge alpine lake with unbeatable campsite views of Mount Meeker.