1.) Dry Fork Coyote Gulch. Grand Staircase-Escalante National Monument, Utah
Best for: Slot canyon exploration and play for everyone from daring canyoneers to kids
Distance: About 3.5 miles round-trip
2.) Búri Cave. Thorlákshöfn, Iceland
Best for: Hikers who like a tight squeeze and experiencing the underworld
Distance: 1.3 miles round-trip, plus hike to cave
3.) Mount Huashan. Huashan National Park, China
Best for: Pilgrims and daredevils
Distance: 7.5 miles from the gate to the top of South Peak
4.) Chadar Trek. Zanskar River Valley, India
Best for: Those who want to trek the Himalaya in winter
Distance: 45.4 miles round-trip
5.) Besseggen Ridge. Jotunheimen National Park, Norway
Best for: Anyone who wants a thrill (and big views of Norway’s most famous national park) without a truly dangerous hike
Distance: 14 miles one-way
