Ключевые слова: artificial, athlete, athletic, athletics, background, blue, color, colorful, compete, competition, competitive, concepts, curve, departure, field, finish, grass, green, healthy, jogging, lane, lifestyle, line, lines, linesrunning, one, outdoor, race, racecourse, racetrack, red, road, rubber, running, speed, sport, sprint, sprinting, stadium, start, striped, surface, texture, textured, track, white, win,