Regions across Colorado
Colorado's highest range, anchored by Mount Elbert and Mount Massive, with gentle slopes, Collegiate Peaks scenery, and the Arkansas River valley.
- Mount Elbert via Northeast Ridge15.3 km · 8h
The rugged Elk Mountains around Aspen and Marble, known for dramatically steep peaks, Maroon Bells, high alpine passes, and the iconic Crystal Mill.
- Four Pass Loop41.8 km · 4d
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.
- Longs Peak via Keyhole Route24.1 km · 1d
- Grays and Torreys Peak Trail12.1 km · 6h
- Royal Arch Trail5.6 km · 2.5h
Colorado's wildest and most geologically dramatic range — jagged peaks, alpine basins, historic mining roads turned 4WD trails, and the Million Dollar Highway.
- Ice Lakes Basin Trail12.9 km · 6h
- Blue Lakes Trail11.3 km · 5h
Colorado's most accessible alpine trail network, orbiting Breckenridge, Frisco, and Silverthorne with 360-degree mountain views above treeline.
- Quandary Peak East Ridge10.8 km · 6h