Updated on January 15, 2025
The Osaka Castle Triathlon Organizing Committee (composed of Osaka City, the Japan Triathlon Union, and the Osaka Triathlon Association) has decided to hold the “Asia Triathlon Cup (2025/Osaka Castle) / Osaka Castle Triathlon 2025” on Sunday, May 25, 2025 (Reiwa 7).
Additionally, registration for participants in the Age Group event of the Osaka Castle Triathlon 2025 will begin on Thursday, January 16, 2025, at 3:00 PM.
For more information about the event, please refer to the “2025 Event Details” under the event details, and for registration details, please check “2025 Registration.”