Ключевые слова: challenge, compete, competition, courage, course, difficult, dirt, dirty, endurance, endure, energy, event, extreme, fast, fit, fitness, grime, grit, health, individual, legion run, mental, mud, mudder, muddy, muscles, obstacle, outdoors, pain, painful, participant, participating, people, physical, run, shock, skill, sport, sport event, sporting, sports, stamina, strength, strong, team, test, tough, tough mudder, toughest, wet,