平井瑞希選手、2025年世界ジュニア選手権100mバタフライで新記録を樹立

Watch as Mizuki Hirai breaks the Championship Record in the girls’ 100m butterfly semifinal at the 2025 World Junior Swimming Championships in Otopeni, Romania!

Hirai powered to a time of 57.02 seconds, surpassing the previous record of 57.25 set by Rikako Ikee in 2017. Hirai’s race featured an impressive split: out in 26.65 and back in 30.37, leading all qualifiers for the final and outpacing strong rivals like Audrey Derivaux (USA) and Gong Zhenqi (China).

Mizuki Hirai already owns the World Junior Record at 56.33 from June 2024, and with another 100 fly race ahead, she’s poised to challenge her own records again. Don’t miss the breakdown of her race and what this means for the future of women’s junior butterfly swimming.

Keywords: Mizuki Hirai, 100m butterfly, World Junior Swimming Championships, championship record, Otopeni Romania, swimming results, junior sports, Rikako Ikee.