Ключевые слова: abstract, athletic, city, compete, competition, course, curve, curve road, drain, drain cover, empty, event, exercise, field, grass, green, grill, ground, healthy, jogging, lane, lawn, metal grating, outdoor, park, pattern, public, recreation, red, road, rubber, rubber matt, run, smooth surface, sport, sports, stadium, start, street, strolling, success, summer, synthetic, texture, track, travel, urban park, walking, way,