3. Laugavegurinn Trail — Iceland
Length: 34 miles (55 km), four days
When to go: June–September
The Laugavegur hiking trail might be Iceland’s most popular, and for good reason. It’s one of the few routes that offer pure, unadulterated wilderness, passing through desolate valleys, cascading waterfalls, glaciers, and volcanic landscapes that will make you think you might actually be on a different planet. It’s even rumored to be the spot that J.R.R. Tolkien visited right before penning his Lord of the Rings trilogy, so it might be the closest you’ll get to Middle Earth.