Ключевые слова: adult, athlete, athletic, background, camelbak, cap, caucasian, cliff, climbing, competition, crosscountry, descent, downhill, endurance, field, hiking, jogger, jogging, male, man, marathon, mountain, outdoor, outdoors, peak, race, rock, run, runner, sky running, skyrunner, skyrunning, slope, sport, track, trail, trail running, trekking, ultra,