Lukas Märtens

Lukas Märtens (born 27 December 2001)^[1] is a German swimmer. He is the reigning 400m freestyle Olympic champion.

Lukas Märtens

Märtens (centre) at the 2024 Summer Olympics
Personal information
Born	(2001-12-27) 27 December 2001 (age 23) Magdeburg, Saxony-Anhalt, Germany
Height	1.92 m (6 ft 4 in)
Weight	75 kg (165 lb)
Sport
Sport	Swimming
Strokes	Freestyle
Medal record Men's swimming Representing  Germany Olympic Games 2024 Paris 400 m freestyle World Championships (LC) 2025 Singapore 400 m freestyle 2022 Budapest 400 m freestyle 2023 Fukuoka 400 m freestyle 2024 Doha 400 m freestyle 2025 Singapore 800 m freestyle European Championships (LC) 2022 Rome 400 m freestyle 2022 Rome 800 m freestyle

Career

Märtens competed at the Olympics in 2020 in the 200 metre freestlye, 400 metre freestyle, 1500 metre freestyle and 4 × 200 metre freestyle relay events,^[1] and in 2024 where he won a gold medal in the 400 metre freestyle event^[2] and came 5th in the 200 metre freestyle event.^[3]

In the 2025 Swim Open Stockholm, he broke the world record in the men's 400-meter freestyle, with a time of 3:39.96, beating Paul Biedermann's record from 2009.^[4]