Japan’s 16-Yr-Old Raito Numata Blasts 4:12.10 400 IM

By Retta Race on SwimSwam
2025 JPN JUNIOR LONG COURSE CHAMPIONSHIPSSaturday, May 11th & Sunday, May 12th
Tokyo, Japan
LCM (50m)
ResultsThe 2025 Japanese Junior Long Course Championships took place this weekend with a big-time swim occurring in the boys’ 400m IM final.
16-year-old Raito Numata fired off a winning result of 4:12.10 to get to the wall over 7 seconds ahead of the competition.
The outing represented a huge personal best, overwriting his previous career-quickest time of