Seibuen Amusement Park Rented Out Entirely for a Rare Aquathlon Race Near Tokyo, Finishers Receive Wooden Medals
On July 4, 2026, Seibuen Amusement Park closed to the public and opened exclusively for the Toshin Partners Team Ken's Cup Aquathlon, a swim-and-run race that's uncommon this close to central Tokyo. Racers competed through the park's pool and running course, with finishers receiving wooden medals instead of the usual metal ones.