Denver, with its little brother Boulder, is the mecca of the young, hyperactive, multisport American urbanite. This unique guide to their world proves the point: the options for mountain biking, climbing, hiking, mountaineering, fly fishing, whitewater kayaking, ice climbing, paragliding, backcountry skiing, snowshoeing, and more seem blissfully endless--and all within (or a half day's drive from) the city limits. Each chapter covers a favorite adventure...