![World Aquatics on X: "It was the longest World Record in the women field! Federica Pellegrini (29th July 2009) 🤜🤛Mollie O'Callaghan (26th July 2023) #AQUAFukuoka23 https://t.co/RyiWXbACIS" / X World Aquatics on X: "It was the longest World Record in the women field! Federica Pellegrini (29th July 2009) 🤜🤛Mollie O'Callaghan (26th July 2023) #AQUAFukuoka23 https://t.co/RyiWXbACIS" / X](https://pbs.twimg.com/media/F19cg-haAAAQhKw.jpg:large)
World Aquatics on X: "It was the longest World Record in the women field! Federica Pellegrini (29th July 2009) 🤜🤛Mollie O'Callaghan (26th July 2023) #AQUAFukuoka23 https://t.co/RyiWXbACIS" / X
![Italy's Federica Pellegrini wins the gold medal and breaks a new world record on women's 400 meters final during the 29th European swimming championships, in Eindhoven, Netherlands, on March 24, 2008. Photo Italy's Federica Pellegrini wins the gold medal and breaks a new world record on women's 400 meters final during the 29th European swimming championships, in Eindhoven, Netherlands, on March 24, 2008. Photo](https://c8.alamy.com/comp/2E4RNT6/italys-federica-pellegrini-wins-the-gold-medal-and-breaks-a-new-world-record-on-womens-400-meters-final-during-the-29th-european-swimming-championships-in-eindhoven-netherlands-on-march-24-2008-photo-by-nicolas-gouhiercameleonabacapresscom-2E4RNT6.jpg)
Italy's Federica Pellegrini wins the gold medal and breaks a new world record on women's 400 meters final during the 29th European swimming championships, in Eindhoven, Netherlands, on March 24, 2008. Photo
![Federica Pellegrini ITA winner women s 200 m free in world record time at the 2009 FINA World Swimming Championships Rome Italy Stock Photo - Alamy Federica Pellegrini ITA winner women s 200 m free in world record time at the 2009 FINA World Swimming Championships Rome Italy Stock Photo - Alamy](https://c8.alamy.com/comp/BD37XM/federica-pellegrini-ita-winner-women-s-200-m-free-in-world-record-BD37XM.jpg)