Ключевые слова: arena, artificial, athlete, athletic, background, building, compete, competition, competitive, concepts, course, curve, empty, exercise, field, finish, finishing, football, grass, green, ground, healthy, jogging, lane, lifestyle, line, linesrunning, new, number, outdoor, perspective, race, racecourse, racetrack, red, road, rubber, run, running, soccer, sport, sprinting, stadium, start, striped, surface, symbol, texture, track, win,