Stock photography, photos: A woman mountain biking in autumn Stock photos of A woman mountain biking in fall aspens in Truckee, CA. Photograph: © William Stevenson Click for a larger image and more information Keywords associated with this stock photo: biking, mountain bike, cycling, bicycling, single track, training, back country, dust, dusty, fast, speed, action, active, effort, energy, liveliness, endurance, motivation, strength, strong, power, aerobic, challenge, desire, difficult, adventure, woman, female, solo, self reliance, fall, autumn, aspens, California, sierras, backlight, backlit, horizontal, Outdoor, outdoors, outside, sports, sporting, sport, exercise, physical, fitness, outdoorsman, sportsman, adventure, adventuring, twenties, 20s, 30s, thirties, one, 1, person, adult, adrenalin, excite, excitement, thrill, thrilling, Sobo