Ключевые слова: asphalt, athlete, athletic, athletics, challenge, chicago, child, children, competition, cross, endurance, energy, exercise, family, female, finish, fit, foot, footwear, jogger, jogging, kid, kids, marathon, marathon runners, moscow, motion, outdoor, parents, people, preschool, pupils, race, run, runner, saint petersburg, school, shoes, slow motion, sport, sportswomen, street, summer, teen, teenager, teenagers, teens, training, urban, young,