BiJa · CZE
Jonáš is a swimmer from Czechia, a butterfly specialist and a sprinter, whose official competitive record spans 3 seasons and 3 meets.
His recorded career begins in 2023 in Liberec, where he raced the 100 individual medley in 2:07.94.
His signature event is the 50 butterfly, his reference distance in butterfly, ahead of the 100 butterfly. Butterfly is the backbone of the whole record: 2 recorded swims.
His fastest 50 butterfly stands at 41.00, set in short course (25 m) at Jablonec nad Nisou.
The record runs unbroken from 2023 to 2025: 3 consecutive seasons without a single missing year.
Those meets span 2 different venues (Liberec and Jablonec Nad Nisou).
Latest competition: Jablonec nad Nisou, on May 24, 2025. He closes this record with 3 current event personal bests, across 3 verified official swims.