DAUPHINS TOULOUSE OEC · FRA
Leon is a swimmer from France, an Olympian and a collegiate competitor, whose official competitive record spans 11 seasons, 12 years, 12 countries and 97 meets.
His recorded career begins in 2015 in Toulouse, where he raced the 800 freestyle in 9:36.56. He started out alongside DAUPHINS TOULOUSE OEC.
His signature event is the 200 individual medley, the event he has raced the most, followed by the 400 individual medley and 200 breaststroke. Individual medley is the backbone of the whole record: 69 meets and 186 recorded swims.
His fastest 200 individual medley stands at 1:52.69, set in long course (50 m) at World Aquatics Championships - Singapore 2025.
He has raced at the Olympic Games level, between 2021 and 2024 (Olympic Games Tokyo 2020 and Olympic Games, Tokyo, JPN). A representative mark at that level is 1:54.06 in the 200 individual medley, recorded in long course (50 m). He also appears in world championships, the World Cup circuit, continental championships, national championships, collegiate championships and international meets.
After a 2-year break between 2016 and 2018, he came back to racing and the record picks up again in 2018. 2024 is the busiest season on record, with 97 verified individual swims.
He is a genuinely international swimmer: the official record spans 12 countries (the United States, France, Japan, Hungary, Singapore, the United Kingdom, UNK, China, Spain, South Korea, Monaco and RUS), including 62 of 97 meets outside France.
Those meets span 45 different venues (Tempe, Paris, Toulouse and Austin…). He has raced for 6 clubs, led by French Swimming Federation, Arizona State University - Summer/Club, Arizona State University and Sun Devil Aquatics.
Still active: the directory includes official activity in the 2026 season. Latest competition: European Championships, on August 16, 2026, with 1 swim: 3:43.14 in the 400 freestyle, all in long course (50 m). He holds 49 current event personal bests and 165 all-time PB improvements across 468 verified official swims in competitions governed by World Aquatics, NCAA, European Aquatics and USA Swimming.