C.D.E. Mako · ESP
Sergio is a swimmer from Spain, a sprinter, whose official competitive record spans 23 seasons and 155 meets.
His recorded career begins in 2004, and one of his earliest marks still on file is the 400 individual medley in 5:59.01, raced in Madrid. He started out alongside C.N. MARBELLA CARABANCHEL.
His signature event is the 50 butterfly, the event he has raced the most, followed by the 50 backstroke and 100 backstroke. Butterfly is where his specialisation lies (83 meets), while backstroke appears in more meets (83 meets and 156 recorded swims) because he races it across the full distance range rather than as a main event.
His fastest 50 butterfly stands at 28.79, set in long course (50 m) at Centro M-86_madrid.
The record runs unbroken from 2004 to 2026: 23 consecutive seasons without a single missing year. 2007 is the busiest season on record, with 46 verified individual swims.
Those meets span 11 different venues (Madrid, Castellón, Palma and Reus…). He has raced for C.D. JEREZ NATACION MASTER, CLUB NATACION JEREZ, C.N. MARBELLA CARABANCHEL and C.D.E. Mako.
Still active: the directory includes official activity in the 2026 season. The last race on record is dated July 5, 2026 in Logroño, with 1 swim: 3:00.84 in the 200 butterfly, all in long course (50 m). He holds 33 current event personal bests and 123 all-time PB improvements across 423 verified official swims in competitions governed by RFEN.