# Klaudia Kazimierska
**Klaudia Kazimierska** (born 2001) is a Polish middle-distance runner who specializes in the 1500 meters and holds the Polish national records at 1500 m outdoors and indoors and at the mile outdoors and indoors.[1](https://worldathletics.org/athletes/_/14704467) In 2026 she won the Diamond League Final in Brussels, took silver at the European Championships in Birmingham, and won the women's 1500 m at the [World Athletics Ultimate Championship](https://www.edgepedia.org/world-athletics-ultimate-championship) in Budapest.[2](https://worldathletics.org/hu/competitions/world-athletics-ultimate-championship/2026/news/report/report-women-1500m-world-ultimate-championship-budapest-26) • [3](https://olimpijski.pl/klaudia-kazimierska-wicemistrzynia-europy-na-1500-m/) She is based in [Eugene, Oregon](https://www.edgepedia.org/eugene-oregon), and competes for the club LKS Vectra Włocławek.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) • [5](https://statystyka.pzla.pl/personal.php?nr_zaw=69924&page=sb&r=1)
| Key fact | Detail |
|---|---|
| Born | 2001, Poland; hometown Włocławek[1](https://worldathletics.org/athletes/_/14704467) • [4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) |
| 1500 m personal best | 3:54.05, Polish record, set 5 September 2026 in Brussels[1](https://worldathletics.org/athletes/_/14704467) |
| Other national records | 1500 m short track 4:01.78 (24 January 2026); mile 4:17.90 (4 July 2026); mile short track 4:21.36 (1 February 2026)[1](https://worldathletics.org/athletes/_/14704467) |
| 800 m personal best | 1:58.11, set 30 August 2026 in Berlin[1](https://worldathletics.org/athletes/_/14704467) |
| 2026 titles | Diamond League Final winner and World Athletics Ultimate champion at 1500 m; European Championships silver medallist[1](https://worldathletics.org/athletes/_/14704467) |
| Global championship results | 10th, 2024 Olympic Games 1500 m; 7th, 2025 World Championships 1500 m[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) |
| Club and base | LKS Vectra Włocławek; lives and trains in Eugene, Oregon; University of Oregon class of 2025[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) |
## Junior career
Running for her local club LKS Vectra in Włocławek, Kazimierska won her first international medal as a 15-year-old, taking silver over 1500 m at the European Youth Olympic Festival in Hungary.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) In 2018 she won bronze in the 1500 m at the European U18 Championships.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) She has said that her father drove her to training sessions and introduced her to the sport.[6](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-kazimierska-tata-wozil-mnie-na-treningi-pokazal-mi-sport-nasze-wideo)
## Move to the United States
Kazimierska moved permanently to the United States and completed her schooling in Eugene, Oregon, where she continues to train.[3](https://olimpijski.pl/klaudia-kazimierska-wicemistrzynia-europy-na-1500-m/) She ran for the [University of Oregon](https://www.edgepedia.org/university-of-oregon), finishing third in the 1500 m at the 2024 NCAA Championships and winning the 2025 Big Ten title at 800 m.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php)
She has described the change in training: in Poland she ran twice a day and covered 120 to 130 kilometers a week, while in the United States the weekly volume is lower, 100 to 105 kilometers, but each session is more intensive, with more work done in a single workout than in two split sessions in Poland.[7](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-klaudia-kazimierska-w-usa-postawilam-pierwsze-kroki-w-kierunku) After the 2025 World Championships she signed a three-year contract in the United States.[7](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-klaudia-kazimierska-w-usa-postawilam-pierwsze-kroki-w-kierunku)
## Global championships, 2024 and 2025
At the Paris 2024 Olympic Games she reached the 1500 m final and finished tenth in 4:00.12.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) • [8](https://iaafmedia.s3.amazonaws.com/misc/olympics/OG2024_ATHLETICS.pdf) At the 2025 [World Athletics Championships](https://www.edgepedia.org/world-athletics-championships) in Tokyo she placed seventh in the final in 3:57.95, which she called the greatest success of her career to that point.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) • [9](https://en.uzathletics.uz/f/worldchamps-resultshandbook.pdf) • [6](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-kazimierska-tata-wozil-mnie-na-treningi-pokazal-mi-sport-nasze-wideo)
## 2026 season
**Indoor records.** In early 2026 she set Polish indoor records at 1500 m short track, 4:01.78 in Boston on 24 January, and at the mile, 4:21.36 on 1 February.[1](https://worldathletics.org/athletes/_/14704467) At the [World Athletics Indoor Championships](https://www.edgepedia.org/world-athletics-indoor-championships) in Kujawy Pomorze, Poland, in March, she finished second in her first-round heat in 4:11.33 and placed sixth in the final in 4:02.80, in front of a home crowd in Toruń.[10](https://iaafmedia.s3.amazonaws.com/competitiondocuments/results-book/WIC26_Result_final.pdf) • [4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php)
**European silver.** At the European Championships in [Birmingham](https://www.edgepedia.org/birmingham) on 16 August 2026, she won the silver medal in the 1500 m in 4:08.80, her first medal at a senior global or continental championship. She said she had decided before the race that she was ready for a medal, and that 300 meters from the line she felt she could win, but the British runner ahead of her held on for gold.[3](https://olimpijski.pl/klaudia-kazimierska-wicemistrzynia-europy-na-1500-m/)
**Late-season records and titles.** A week after Birmingham she ran 3:55.59 at the [Diamond League](https://www.edgepedia.org/diamond-league) meeting in Chorzów, breaking the Polish 1500 m record.[5](https://statystyka.pzla.pl/personal.php?nr_zaw=69924&page=sb&r=1) On 5 September 2026 she won the Diamond League Final in Brussels in 3:54.05, a meeting record, world-leading time, and Polish record.[1](https://worldathletics.org/athletes/_/14704467) • [5](https://statystyka.pzla.pl/personal.php?nr_zaw=69924&page=sb&r=1) A week later in Budapest she won the women's 1500 m at the World Athletics Ultimate Championship Budapest 26 in 3:57.55, confirming that her Brussels victory was no fluke.[2](https://worldathletics.org/hu/competitions/world-athletics-ultimate-championship/2026/news/report/report-women-1500m-world-ultimate-championship-budapest-26) • [5](https://statystyka.pzla.pl/personal.php?nr_zaw=69924&page=sb&r=1) She also became Polish senior champion at both 800 m and 1500 m in [Białystok](https://www.edgepedia.org/bia-ystok) in July 2026, and her 800 m best of 1:58.11 came in Berlin on 30 August 2026.[4](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php) • [5](https://statystyka.pzla.pl/personal.php?nr_zaw=69924&page=sb&r=1)
## Outlook
Kazimierska has named the European Championships and the World Championships in Beijing as medal targets on the road to the 2028 Olympic Games in Los Angeles.[7](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-klaudia-kazimierska-w-usa-postawilam-pierwsze-kroki-w-kierunku) After her 2026 season, the [World Athletics](https://www.edgepedia.org/world-athletics) profile listed her first in the women's 1500m world rankings.[1](https://worldathletics.org/athletes/_/14704467)
## References
1. [Klaudia KAZIMIERSKA profile, World Athletics](https://worldathletics.org/athletes/_/14704467)
2. [Kazimierska crowned Ultimate 1500m champion in Budapest, World Athletics](https://worldathletics.org/hu/competitions/world-athletics-ultimate-championship/2026/news/report/report-women-1500m-world-ultimate-championship-budapest-26)
3. [Klaudia Kazimierska wicemistrzynią Europy na 1500 m, Polski Komitet Olimpijski](https://olimpijski.pl/klaudia-kazimierska-wicemistrzynia-europy-na-1500-m/)
4. [Klaudia Kazimierska, Global Athletics & Marketing](https://www.globalathletics.com/users/164/65/klaudia-kazimierska.php)
5. [Klaudia KAZIMIERSKA, sezon 2026, Statystyki PZLA](https://statystyka.pzla.pl/personal.php?nr_zaw=69924&page=sb&r=1)
6. [Lekkoatletyczne MŚ. Kazimierska: tata woził mnie na treningi, pokazał mi sport, Polska Agencja Prasowa](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-kazimierska-tata-wozil-mnie-na-treningi-pokazal-mi-sport-nasze-wideo)
7. [Lekkoatletyczne MŚ. Klaudia Kazimierska: w USA postawiłam pierwsze kroki w kierunku światowego sportu, Polska Agencja Prasowa](https://www.pap.pl/aktualnosci/lekkoatletyczne-ms-klaudia-kazimierska-w-usa-postawilam-pierwsze-kroki-w-kierunku)
8. [Official Athletics Results Book, Olympic Games Paris 2024, World Athletics](https://iaafmedia.s3.amazonaws.com/misc/olympics/OG2024_ATHLETICS.pdf)
9. [World Athletics Championships Tokyo 2025 Results Handbook](https://en.uzathletics.uz/f/worldchamps-resultshandbook.pdf)
10. [World Athletics Indoor Championships Kujawy Pomorze 26 Results Book](https://iaafmedia.s3.amazonaws.com/competitiondocuments/results-book/WIC26_Result_final.pdf)
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*Topic: Encyclopedia › Sports, games, and recreation › Individual sports and outdoor recreation › Athletics, gymnastics, and strength sports › Athletes of track and field and road running › Middle and long-distance track runners*
*Initially written Sep 17, 2026 · Reviewed: Oct 21, 2026 · Edited: Oct 12, 2026; Oct 15, 2026; Oct 21, 2026 · Last review: Oct 21, 2026*
*Copyright 2026 EdgeChat AI, a subsidiary of Biostate AI.*
License: Edgepedia Community License 1.0, https://www.edgepedia.org/edgepedia/license