Aiming high
Participants warm up for the Sky Run, an international vertical marathon held Sunday at Lotte World Tower in Seoul. Competitors raced up 2,917 stairs to reach the observation deck of the 123-story skyscraper. / Yonhap
Participants warm up for the Sky Run, an international vertical marathon held Sunday at Lotte World Tower in Seoul. Competitors raced up 2,917 stairs to reach the observation deck of the 123-story skyscraper. / Yonhap