4. Big Bend National Park, Texas
The scorching temps of West Texas are a little milder come winter, making Big Bend National Park a much more hospitable place. The South Rim provides a moderately hard but still exciting hike, with an elevation gain of 2000 feet over 12 miles through canyons, peaks and the greenest part of the park. It makes an excellent overnight, too.
3. Yosemite Valley, California
Yosemite is flocked to by tourists year-round, and even during the coldest of winter, you will have a hard time finding solitude. But the view of El Capitan and Half Dome framed by snow will make up for it. For a good hike, try Mirror Lake Trail, which follows Tenaya Creek to the epynomous Mirror Lake. Or head up to Bridalveil Fall, an easy hike to one of the most picturesque waterfalls in the country.