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15 U.S. cities for outdoor enthusiasts

By: Bryan Nelson on Oct. 18, 2010, 12:30 p.m.
Portland, Oregon

Photo: Wiki Commons/GNU

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Portland, Ore.

Just a short distance from the snow-capped Cascades, the Columbia River Gorge and the sparkling Oregon coast, Portland might have more diversity to offer the adventurer than any other city in the country. Ski in the winter, surf in the summer and hike, camp and explore all year long.

On clear days, enjoy views of the towering Mount Hood and Mount Saint Helens, and raft your way down the scores of green river valleys. The city is also one of the most bike-friendly cities in the world, and the people there have an enthusiasm for environmentalism that's contagious.