BiJa · CZE
Jan is a swimmer from Czechia, a butterfly specialist and a sprinter, whose official competitive record spans 7 meets.
His recorded career begins in 2026 in Česká Lípa, where he raced the 800 butterfly in 10:58.78. He started out alongside Tělovýchovná jednota Bižuterie, z.s..
His signature event is the 100 butterfly, the event he has raced the most, followed by the 50 butterfly and 200 butterfly. Butterfly is the backbone of the whole record: 7 meets and 11 recorded swims.
His fastest 100 butterfly stands at 1:07.38, set in short course (25 m) at Česká Lípa.
2026 is the busiest season on record, with 13 verified individual swims.
Those meets span 6 different venues (Česká Lípa, Trutnov, Děčín and Litoměřice…). He has raced for BiJa.
Still active: the directory includes official activity in the 2026 season. The last race on record is dated June 6, 2026 in Trutnov, with 2 swims: 1:16.75 in the 100 individual medley and 1:16.57 in the 100 butterfly, all in short course (25 m) and 1 PB improvement. He holds 6 current event personal bests and 10 all-time PB improvements across 13 verified official swims.