2026 Attendance Data: US Nationals and Pan Pacific Championships at William Woollett Jr. Aquatics Center in Irvine

core: The 2026 US National Championships are projected to attract 18,701 total attendees including 809 swimmers at the William Woollett Jr. Aquatics Center in Irvine, California, while the 2026 Pan Pacific Championships are forecasted to have 13,439 total attendees with 275 entrants. These domestic selection and continental championship events serve as key preparation for the 2028 Olympics and Pan Pacific team selection.
key_facts: US Nationals 2026 total attendance: 18,701 (809 swimmers); Pan Pacific 2026 total attendance: 13,439 (275 entrants); Venue: William Woollett Jr. Aquatics Center, Irvine, CA (hosted 2010 Pan Pacific Championships); Comparison: Attendance significantly lower than 2024 Olympic Trials (285,000+ spectators); Events positioned as selection meets for national team and Olympic cycle preparation
source: USA Swimming official release via The Sports Examiner, based on technical analysis provided
related: question: What is the significance of these events for USA Swimming?, answer: They function as domestic national championships and continental selection meets for Pan Pacific participation and 2028 Olympic preparation.; question: How does the venue compare to past events?, answer: William Woollett Jr. Aquatics Center has hosted the 2010 Pan Pacific Championships, providing continuity for major US swimming events.; question: Why is the attendance lower than Olympic Trials?, answer: The figures reflect a shift toward domestic-focused events rather than the massive international scale of Olympic Trials.