Red sandstone gives way to high deserts, waterfalls, and sandstone wilderness in one of the most varied ecosystems in the US. Hike the Riverside for a unique experience among tall rock walls and easy streams, or take the West Rim Trail to Angles Landing, an indescribable strenuous hike up winding trails carved on the blue mountains. Experienced hikers can attempt the Parunuweap Canyon Trail, a solitary, steep hike through a narrow exit canyon and up the side of Mt. Carmel Junction. Extremely tough but well-worth it. Zion's National Park's consistently ranks as one of the top five hiking places in the country.
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Alaska: Yukon-Charley Rivers National Preserve
Extending 115 miles along the Canadian border, the preserve features numerous historic sites left behind by the gold rush era of the late 1800's. Peregrine falcons and black bears are signature sights.
Hawaii: Hanakapiai Falls Trail
Breathtaking cascading waterfalls are the highlight of this trail. The hike is long and strenuous and although no permits are needed for day hikers, most travelers get a multi-day permit that allows them to camp in the area and extend their hike for several days. Plan in advance, as passes are highly in demand and hard to come by. Numerous streams cut the trail, making for beautiful but slippery scenery. Sturdy boots are a must, and so is being in good shape. Hike the 4-mile steep trail to the main area and you'll be rewarded by a chain of falls cascading down green and blue mountain rocks. A must see if you're in Hawaii.
District of Columbia: Columbia Island
Great views of Washington DC are one of the main highlights of the island. A favorite among dog-owners, the island offers easy trails that also attract families and older hikers. The island is basically a giant garden, abundant in daffodils and flowering bushes. Easily accessible by public transportation from the city center.