Isabel Gose Puts Up Strong 1500 Free Performance At Swim Open Stockholm

2025 SWIM OPEN STOCKHOLM

• Saturday, April 12th – Tuesday, April 15th
• Stockholm, Sweden
• LCM (50m)
• SwimSwam Preview
• Entries/Live Results

Day one of the 2025 Swim Open Stockholm brought an unexpected World Record at the hands of German Lukas Märtens.

Racing in the men’s 1500m freestyle, Märtens unleashed a time of 3:39.96 to overwrite the longstanding supersuited record countryman Paul Biedermann put on the books in 2009.

• Lukas Märtens Throws Down 3:39.96 World Record in 400 Free

Another race we highlighted was the men’s 50m fly where 26-year-old Olympic medlaist Kyle Chalmers produced a new lifetime best of 22.89. In doing so, he became the 2nd-fastest Australian in history and the fastest from his nation in textile.

• On-Fire Kyle Chalmers Cranks Out 22.89 50 Fly As #2 Aussie Ever

There were additional races worth noting as well, including the women’s 1500m freestyle, where Isabel Gose established a new meet record en route to gold.

22-year-old Gose of Germany stopped the clock at 15:58.17, narrowly defeating open water Olympic silver medalist Moesha Johnson of Australlia.

Johnson settled for silver less than half a second back in 15:58.53 while Gose’s teammate Celine Rieder rounded out the podium in 16:24.58.

Gose’s performance checks in as the 8th-best of her career, one which boasts a lifetime best and German national record of 15:41.16 as she won bronze at the 2024 Olympic Games.

Gose and Johnson now rank 2nd and 3rd in the world, respectively, this season.

The men’s 200m breast saw Poland’s Jan Kalusowski come within range of the current national record en route to gold.

Kalusowski nabbed the top spot in 2:10.49, a mark just half a second away from Dawid Wikiera‘s Polish standard of 2:09.99 clinched in 2022.

Wikiera was also in tonight’s race but finished well back in 2:12.26 for silver. Germany’s Lukas Matzerath bagged the bronze in 2:12.45.

Kalusowski’s time was just .29 off his lifetime best and was also only .17 off the World Aquatics ‘A’ standard of 2:10.32 needed for this summer’s World Championships.

Chalmers’ teammate Iona Anderson got it done for gold in the women’s 50m back, producing a swift 27.58 to get to the wall first.

She represented one of two sub-29-second swimmers, joined by Belgian national record holder Roos Vanotterdijk who hit 27.81. Dutch Olympian Marrit Steenbergen also landed on the podium in 28.82.

Anderson’s lifetime best sits at 27.52 while Vanotterdijk’s time tonight checks in as a new career-best mark. It improved her former Belgian record of 27.97 from February of 2023.

Additional Notes

• Polish speedster Ksawery Masiuk hit a time of 1:58.46 to take the men’s 200m backstroke in the sole sub-2:00 effort of the field. Masiuk’s time slightly improved upon the 1:58.76 logged at last month’s Polish Grand Prix.
• Host nation swimmer Sara Junevik punched a time of 25.88 to win the 50m fly by just .01 ahead of Germany’s Angelina Kohler. Vanotterdijk doubled up with bronze here, coming within .20 of Kim Buys’ national record.