Athletes run in a marathon event scaling the 123-story Lotte World Tower in Seoul's Songpa Ward on July 6, 2025, as part of an aquathlon event consisting of a 1.5-kilometer swimming portion in Lake Seokchon and a marathon racing up 500-meter 2,917 stairs from the ground floor to the observatory on the top floor of the country's tallest building. (Pool photo) (Yonhap)
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