Trail Regions & Routes

Colorado's highest range, anchored by Mount Elbert and Mount Massive, with gentle slopes, Collegiate Peaks scenery, and the Arkansas River valley.

The rugged Elk Mountains around Aspen and Marble, known for dramatically steep peaks, Maroon Bells, high alpine passes, and the iconic Crystal Mill.

The easternmost Rockies rising directly from the Great Plains — Denver's backyard peaks, foothill trails, and the classic fourteener corridor from Boulder to Colorado Springs.

Colorado's wildest and most geologically dramatic range — jagged peaks, alpine basins, historic mining roads turned 4WD trails, and the Million Dollar Highway.

Colorado's most accessible alpine trail network, orbiting Breckenridge, Frisco, and Silverthorne with 360-degree mountain views above treeline.