Ключевые слова: action, america, boots, challenges, closeup, competition, competitor, country, course, cross, dirty, dust, dusty, event, exercise, extreme, feet, field, fitness, foot, legs, man, marathon, men, mud, muddy, nature, obstacle, outdoor, participant, physical, race, racing, rain, rubber, run, runner, running, sand, shoes, short, splash, sport, strong, top, track, view, water, waterproof, wet,