Stock photography, photos: Cycling in San Francisco Stock photos of A man cycling in San Francisco, CA. Photograph: © William Stevenson Click for a larger image and more information Keywords associated with this stock photo: biking, bike, bicycling, cycling, San Francisco, lifestyle, city, urban, riding, fun, man, male, one person, Athletic, athlete, Outdoor, outdoors, outside, sports, sporting, sport, exercise, health, healthy, physical, fitness, outdoorsman, sportsman, adventure, adventuring, twenties, 20s, 30s, thirties, one, 1, person, berg