Men's/Women's Speed Aquathlon: 500m swim (5 laps) in the pool, followed by 2.5km run (1 lap) around the National Athletic-Training Center of Olympic Village. Held under World Triathlon rules. Numbered swim cap and race belt with bib provided by the organizer are mandatory; headphones/audio devices are banned for safety. Torso must be covered during the run. Athletes are marked with their bib number on hand and leg before the start. Secretariat opens 07:45; all athletes must complete bib pickup by 09:00 regardless of their heat start time. Race held in two heats (10:30, 10:45).