The 20 Most Challenging Hikes in America, Ranked

11.The Garden Wall, Glacier National Park, Montana

Difficulty: Class 3

The Garden Wall is an impressive 15-mile out-and-back hike through the heart of Glacier National Park. This trail offers incredible views of Grinnell Glacier and the majestic alpine ridge, with steep and exposed sections that challenge even experienced hikers. Hazards like snowfields can remain throughout the summer, requiring careful planning. Summer months bring wildflowers, creating a beautiful contrast to the rugged terrain.

Open from June to October, highlights include the Highline Trail and Grinnell Glacier Overlook. Be prepared for steep drop-offs and unpredictable conditions. Dogs are not allowed to ensure the area stays pristine and to protect wildlife.