USK · CZE
Wilhelm is a swimmer from Czechia, a butterfly specialist and an international traveller on the circuit, whose official competitive record spans 3 seasons, 2 countries and 15 meets.
His recorded career begins in 2024, and one of his earliest marks still on file is the 1500 butterfly in 21:29.30, raced in Plzeň - Slovany. He started out alongside Univerzitní sportovní klub Praha, spolek.
His signature event is the 200 butterfly, the event he has raced the most, followed by the 100 butterfly and 50 butterfly. Butterfly is the backbone of the whole record: 13 meets and 18 recorded swims.
His fastest 200 butterfly stands at 2:25.82, set in long course (50 m) at Drážďany Německo.
The record runs unbroken from 2024 to 2026: 3 consecutive seasons without a single missing year. 2026 is the busiest season on record, with 19 verified individual swims.
He is a genuinely international swimmer: the official record spans 2 countries (UNK and Germany), most often in UNK (14 meets).
Those meets span 9 different venues (Praha - Radlice, České Budějovice, Chomutov and Dresden…). He has raced for USK.
Still active: the directory includes official activity in the 2026 season. The last race on record is dated September 12, 2026 in Chomutov, with 1 swim: 32.22 in the 50 butterfly, all in short course (25 m). He holds 14 current event personal bests and 18 all-time PB improvements across 23 verified official swims.