Ключевые слова: athlete, blue, climbing, competition, crosscountry, down, endurance, female, group, hiking, jogger, male, man, marathon, mountain, nordic, outdoors, poles, race, run, runner, sky, sky running, skyrunner, skyrunning, sport, steep climb, sticks, summer, track, trail, trail running, trailrunning, trekking, uphill, walk, walking, woman,