A participant crosses the finish line during the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)

Participants are ready to take part in the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)

Participants take part in the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)

Participants take part in the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)

Participants take part in the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)

A participant takes part in the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)

A participant takes part in the 2025 Lotte Aquathlon competition including Lake Swim and Sky Run, in Seoul, South Korea, July 6, 2025. The competition attracted more than 800 participants. (Photo by Park Jintaek/Xinhua)