A bird's-eye view of San Jose, Calif., through our trail-finder website, TrailLink.com , reveals a busy network of trails and bike paths, lines snaking through the city like healthy arteries. During the past decade or so, the managers of this growing metropolis have understood that as the population grows, so too must the transportation system, particularly options for walking and biking. The latest addition to that growing network is a new section of San Jose's five-mile Highway 237 Bikeway , which...