A participant (R) high-fives a child volunteer in the staircase inside the Skyliner building during the Skyliner Everest Run 2026 in Warsaw, Poland on Feb. 21, 2026. The event requires competitors to ascend the 42-floor staircase 55 times within 24 hours, reaching a cumulative height equivalent to the world's highest peak, Mount Qomolangma. (Photo by Jaap Arriens/Xinhua)

Participants climb the stairs inside the Skyliner building during the Skyliner Everest Run 2026 in Warsaw, Poland on Feb. 21, 2026. The event requires competitors to ascend the 42-floor staircase 55 times within 24 hours, reaching a cumulative height equivalent to the world's highest peak, Mount Qomolangma. (Photo by Jaap Arriens/Xinhua)

A participant high-fives a child volunteer in the staircase inside the Skyliner building during the Skyliner Everest Run 2026 in Warsaw, Poland on Feb. 21, 2026. The event requires competitors to ascend the 42-floor staircase 55 times within 24 hours, reaching a cumulative height equivalent to the world's highest peak, Mount Qomolangma. (Photo by Jaap Arriens/Xinhua)

A participant climbs the stairs inside the Skyliner building during the Skyliner Everest Run 2026 in Warsaw, Poland on Feb. 21, 2026. The event requires competitors to ascend the 42-floor staircase 55 times within 24 hours, reaching a cumulative height equivalent to the world's highest peak, Mount Qomolangma. (Photo by Jaap Arriens/Xinhua)

A participant climbs the stairs inside the Skyliner building during the Skyliner Everest Run 2026 in Warsaw, Poland on Feb. 21, 2026. The event requires competitors to ascend the 42-floor staircase 55 times within 24 hours, reaching a cumulative height equivalent to the world's highest peak, Mount Qomolangma. (Photo by Jaap Arriens/Xinhua)

Participants rest on a high floor inside the Skyliner building during the Skyliner Everest Run 2026 in Warsaw, Poland on Feb. 21, 2026. The event requires competitors to ascend the 42-floor staircase 55 times within 24 hours, reaching a cumulative height equivalent to the world's highest peak, Mount Qomolangma. (Photo by Jaap Arriens/Xinhua)