Ключевые слова: adult, amsterdam, asphalt, athlete, athletic, athletics, berlin, boston, challenge, chicago, competition, cross, endurance, energy, exercise, fast, female, finish, fit, fitness, foot, footwear, health, jogger, jogging, london, marathon, marathon runners, motion, new york city, outdoor, paris, people, race, run, runner, shoes, speed, sport, sportswomen, street, summer, team, trail, training, urban, woman, women, workout, young,