NANTOU, TAIWAN - SEPTEMBER 20: Thousands of participants wearing pink caps form a massive stream down the sloped path leading to Chaowu Pier, marked by a venue sign in the background on September 20, 2026 in Nantou, Taiwan. Over 21,700 swimmers from 38 countries and regions, equipped with brightly colored safety buoys, traverse the open waters of Sun Moon Lake from Chaowu Pier to Ita Thao Pier during the 44th Sun Moon Lake Swimming Carnival, one of Taiwan's largest outdoor water sports events featuring upgraded real-time dual-chip tracking systems for safety. (Photo by Cheng Chia Huang/Getty Images)