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Léon Marchand

Léon Marchand is a French competitive swimmer born in Toulouse in 2002.

By Ethan Anderson| Reviewed by Olivia Bennett, Standards & Fact-Checking Lead| Updated July 26, 2026|2 min read| Fact-checked

Léon Marchand is a French competitive swimmer born in Toulouse in 2002. He is an Olympic champion and world-record holder best known for his performances in individual medley and other stroke events, especially at the 2024 Paris Olympics.

Early life and background

Léon Marchand was born on 17 May 2002 in Toulouse, France. He grew up in a family connected to competitive swimming; his father, Xavier Marchand, and mother, Céline Bonnet, are former elite swimmers.

Swimming career

Marchand emerged as one of France's leading swimmers through international championships, NCAA competition, and European events. He specializes in individual medley, breaststroke, and butterfly.

Olympic achievements

At the 2024 Paris Olympics, Marchand won four individual gold medals and set multiple Olympic records, including in the 200 m and 400 m individual medley, 200 m butterfly, and 200 m breaststroke. His results made him one of the most decorated athletes of those Games.

Records and recognition

Marchand holds world records in the 200 m and 400 m individual medley in long course, as well as the 200 m individual medley in short course. He is widely described as one of the leading male swimmers of his generation.

Training

Marchand has trained with Bob Bowman, the former coach of Michael Phelps. Later reporting indicates he moved from Arizona State-related training in Tempe to Austin, Texas, following Bowman.

Key facts

  • Born 17 May 2002 in Toulouse, France, into a family of elite swimmers.
  • Won four individual gold medals at the 2024 Paris Olympics, setting multiple Olympic records.
  • Holds world records in the long-course 200 m and 400 m individual medley and the short-course 200 m individual medley.
  • Trained under Bob Bowman, former coach of Michael Phelps, and later moved to Austin, Texas.
  • Specializes in individual medley, breaststroke, and butterfly events.

Frequently asked questions

Who is Léon Marchand?
Léon Marchand is a French swimmer known for international success in individual medley, breaststroke, and butterfly events. He became especially prominent after winning four gold medals at the Paris 2024 Olympics.
How old is Léon Marchand?
He was born on 17 May 2002, so he is 24 years old as of 23 July 2026.
Léon Marchand Olympics
Marchand won four individual gold medals at the 2024 Paris Olympics and set four Olympic records there. He became one of the standout athletes of the Games.
Léon Marchand world records
He holds the long-course world records in the 200 m and 400 m individual medley and the short-course world record in the 200 m individual medley.
What is Léon Marchand known for?
He is known for elite individual medley swimming, record-setting performances, and his historic four-gold-medal run at the 2024 Paris Olympics.
Where does Léon Marchand train?
He has trained under Bob Bowman, with reporting linking his training to Arizona State and later Austin, Texas, after Bowman’s move.

References

  1. Wikipedia — https://en.wikipedia.org/wiki/L%C3%A9on_Marchand
    Supports: Birth date and place, nationality, height, strokes, coaches, and world/ Olympic record claims.
  2. Olympics.com — https://www.olympics.com/en/athletes/leon-marchand
    Supports: Paris 2024 achievements, four individual gold medals, Olympic records, and coach background.
  3. Équipe de France Olympique — https://www.equipedefrance.com/athlete/leon-marchand
    Supports: Birth date and place, family background, club affiliation, and coaching by Bob Bowman.
  4. NBC Olympics — https://www.nbcolympics.com/news/leon-marchand-meet-athlete
    Supports: Age, birthplace, world-record claim in the 400 m individual medley, and training under Bob Bowman.
  5. ESPN — https://www.espn.com/olympics/story/_/id/40694208/olympics-paris-leon-marchand-swimming-gold-medals-records-king
    Supports: Paris 2024 gold medals and Olympic record performances.
  6. The Athletic — https://www.nytimes.com/athletic/6834069/2025/12/02/leon-marchand-olympics-swimming-los-angeles-2028-speedo/
    Supports: Later training location in Austin, Texas, after moving with coach Bob Bowman.