Ключевые слова: 10k, 5k, aerobic, athlete, athletics, boys, cardio, conditioning, copy space, cross country, dieting, distance, endurance, exercise, field, fitness, front view, girls, grass, group, healthy, high school, jogging, lifestyle, motion, outdoors, pacing, park, real people, runners, running, sports, team, teenagers, track and field, trail, training, weight loss, workout, young,