Sydney McLaughlin-Levrone

American track and field athlete who holds the world record in 400m hurdles and is a two-time Olympic champion in the event with a personal best of 50.37 second

Sydney McLaughlin-Levrone was born in New Brunswick, New Jersey in 2000. She has broken the 400-metre hurdles world record four times since 2021 — currently holding the record at 51.29 seconds set at the Paris 2024 Olympics. She won Olympic gold at Tokyo 2021 and Paris 2024. She has won two World Championship titles. Her technical progression — each world record involving a specific refinement of her hurdling technique — has made her the subject of more biomechanical analysis than any other track athlete of her era. Her collision course rivalry with Dalilah Muhammad produced the most watched individual event in women's track athletics across multiple championships. She became the first woman to break 52 seconds in the 400 hurdles, then 51 seconds. At 24 she has already produced the most decorated individual 400 hurdles career by any woman. She is also an elite flat 400-metre runner and the combination of both disciplines across her career suggests records that could stand for a generation. McLaughlin-Levrone's bold switch from the 400m hurdles to the flat 400m was vindicated spectacularly in Tokyo in 2025. She shattered the US record with 48.29 in the semi-finals, then won gold in a championship record 47.78 - the second-fastest time in history, just 0.18 shy of Marita Koch's 40-year-old world record - becoming the only athlete ever to win world titles in both the 400m and 400m hurdles. She added 4x400m relay gold and was named women's World Athlete of the Year.

Explosive speed endurance with exceptional hurdle technique

Revolutionized women's 400m hurdles with multiple world records

• Olympic Gold 2x (2021,2024)
• World Record 400m hurdles 4x (52.70 current)
• World Championships 2x
• World champion, 400m (2025)
• World champion, 4x400m relay (2025)
• World Athlete of the Year (2025)