Stock photography, photos: A woman trail running Stock photos of A woman running up a steep ridge above Donner Lake, CA. Photograph: © William Stevenson Click for a larger image and more information Keywords associated with this stock photo: Running, runner, run, training, high, back, country, action, active, effort, energy, liveliness, determination, momentum, motivation, strength, strong, aerobic, desire, freedom, carefree, solo, alone, woman, spring, summer, California, sierras, alpine, backpack, vertical, Dreo, Outdoor, outdoors, outside, sports, sporting, sport, exercise, physical, fitness, outdoorsman, sportsman, adult, young, adventure, adventuring, twenties, 20, s, 30, thirties, one, 1, person