Ключевые слова: aspirations, athlete, athletic, backgrounds, challenge, competition, curve, direction, empty, event, exercise, exercising, field, guidance, horizontal, indoors, jog, lane, lifestyles, line, marathon, motivation, number, outdoors, playground, pristine, race, racing, ready, red, rough, run, runner, runners, running, smooth, soccer, sport, sporting, sprinter, sprinting, stadium, start, starting, striped, surface, track, white,