ESP
Sergio is a swimmer from Spain whose official competitive record spans 16 seasons and 171 meets.
His recorded career begins in 2011, and one of his earliest marks still on file is the 400 freestyle in 4:26.95, raced in Valladolid. He started out alongside C.N. PALENCIA.
His signature event is the 100 backstroke, the event he has raced the most, followed by the 200 backstroke and 200 freestyle. Backstroke is where his specialisation lies (123 meets), while freestyle appears in more meets (135 meets and 220 recorded swims spread across 6 different distances) because he races it across the full distance range rather than as a main event.
His fastest 100 backstroke stands at 1:04.07, set in long course (50 m) at Valladolid.
The record runs unbroken from 2011 to 2026: 16 consecutive seasons without a single missing year. 2024 is the busiest season on record, with 60 verified individual swims.
Those meets span 5 different venues (Valladolid, Salamanca, Gijón and Madrid…). He has raced for FED. CASTILLA-LEON NATACION and C.N. PALENCIA.
Still active: the directory includes official activity in the 2026 season. The last race on record is dated July 5, 2026 in Valladolid, with 1 swim: 31.46 in the 50 backstroke, all in long course (50 m). He holds 31 current event personal bests and 344 all-time PB improvements across 587 verified official swims in competitions governed by RFEN.