C.N. Ciudad de Oviedo · ESP
Sergio is a swimmer from Spain, a backstroke specialist and a sprinter, whose official competitive record spans 12 seasons and 146 meets.
His recorded career begins in 2014, and one of his earliest marks still on file is the 100 breaststroke in 1:33.87, raced in Gijon.
His signature event is the 100 backstroke, his reference distance in backstroke, ahead of the 200 backstroke and 50 backstroke. Backstroke is the backbone of the whole record: 75 meets and 140 recorded swims.
His fastest 100 backstroke stands at 58.83, set in long course (50 m) at Palma de Mallorca.
The record runs unbroken from 2014 to 2025: 12 consecutive seasons without a single missing year.
Those meets span 18 different venues (Oviedo, Gijón, Aviles and Mieres…). He has raced for C.N. Ciudad de Oviedo.
Latest competition: Gijón, on November 23, 2025. He closes this record with 31 current event personal bests and 317 all-time PB improvements, across 334 verified official swims in competitions governed by RFEN.