From the snowcapped peaks of the Sierras to the towering coastal redwoods of Muir Woods, California's national parks are renowned for their splendor. Touring these national treasures by bike has become a favorite way to leave luggage-laden cars and busy roads behind and enjoy the hidden byways of these parks more fully. As Edward Abbey wrote, A man on a bicycle will see more, feel more, enjoy more in one mile than the motorized tourist can in a hundred...