2026 第23回アクアスロンINシーサイドももち

Aquathlon IN Seaside Momochi is an aquathlon event held at Seaside Momochi Seaside Park in Fukuoka, Japan, with the main venue around the Central Plaza area. The event combines open-water swimming with running in and around the seaside park, and the source outlines multiple participation divisions including general, challenge, and kids/junior races. The race applies triathlon competition rules together with local rules, and the event information includes guidance on wetsuit use, race-number handling, check-in, registration, and attendance at the race briefing and opening ceremony. The source also notes that the organizer provides items such as a commemorative gift, event program, aid-station drinks, and race-number materials, while participants must prepare their own swim cap where needed. Access information is provided for public transport and buses serving the Seaside Momochi area. The event is organized as a local multisport race with support from sports and triathlon-related organizations and community partners.