Esther Köster

born 2011 · female · 🇸🇪 Sweden · Simklubben Hajen

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Results period: 2025/26 (current)2024/25 2023/24 2022/23 All-time

The current season is incomplete; the ranking shows results available to date without projections.

Meets

Swims

Best FINA points

339

Progression — all-time

50 m freestyle 25 m pool

5 swims · best time 34.82 · 5.80 faster than the first swim

100 m freestyle 25 m pool

5 swims · best time 1:18.87 · 17.55 faster than the first swim

50 m butterfly 25 m pool

4 swims · best time 40.16 · 17.21 faster than the first swim

50 m freestyle 50 m pool

4 swims · best time 33.85 · 9.73 faster than the first swim

50 m backstroke 50 m pool

3 swims · best time 39.40 · 10.37 faster than the first swim

50 m breaststroke 25 m pool

3 swims · best time 51.66 · 4.12 faster than the first swim

100 m medley 25 m pool

3 swims · best time 1:43.89 · 7.38 faster than the first swim

50 m backstroke 25 m pool

2 swims · best time 40.11 · 2.28 faster than the first swim

Season-best results from 2025/26 against Paris 2024 bronze and the qualifying standard (OQT).

Event	Pool	Time	Target	WOZ	Missing
50 freestyle	50 m pool	33.85	Olympic bronze 24.20 record: Zhang Yufei	71.5%	+9.65
100 backstroke	50 m pool	1:22.79	Olympic bronze 57.98 record: Katharine Berkoff	70.0%	+24.81
200 freestyle	50 m pool	2:47.22	Olympic bronze 1:54.55 record: Siobhan Haughey	68.5%	+52.67
100 freestyle	50 m pool	1:17.70	Olympic bronze 52.33 record: Siobhan Haughey	67.3%	+25.37
200 medley	50 m pool	3:10.97	Olympic bronze 2:08.08 record: Kaylee McKeown	67.1%	+1:02.89
100 breaststroke	50 m pool	1:51.05	Olympic bronze 1:05.59 record: Mona McSharry	59.1%	+45.46
100 butterfly	50 m pool	1:38.74	Olympic bronze 56.21 record: Zhang Yufei	56.9%	+42.53

Event	Pool	Time	FINA pts	Where
50 m backstroke	50 m pool	39.40	316	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m backstroke	25 m pool	40.11	249	14 Dec 2025 · SK Hajen Klubbmästerskap 2025
100 m backstroke	50 m pool	1:22.79	328	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m breaststroke	50 m pool	49.69	202	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m breaststroke	25 m pool	51.66	165	14 Dec 2025 · SK Hajen Klubbmästerskap 2025
100 m breaststroke	50 m pool	1:51.05	192	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m butterfly	50 m pool	41.06	210	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m butterfly	25 m pool	40.16	223	14 Dec 2025 · SK Hajen Klubbmästerskap 2025
100 m butterfly	50 m pool	1:38.74	174	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m freestyle	50 m pool	33.85	339	17 Apr 2026 · Kungsbacka Spring Meet 2026
50 m freestyle	25 m pool	34.82	285	4 Oct 2025 · Nereus Cup 2025
100 m freestyle	50 m pool	1:17.70	294	17 Apr 2026 · Kungsbacka Spring Meet 2026
200 m freestyle	50 m pool	2:47.22	302	17 Apr 2026 · Kungsbacka Spring Meet 2026
400 m freestyle	25 m pool	5:51.24	285	4 Oct 2025 · Nereus Cup 2025
200 m medley	50 m pool	3:10.97	288	17 Apr 2026 · Kungsbacka Spring Meet 2026

Date	Meet	Event	Time	Pts
17 Apr 2026	Kungsbacka Spring Meet 2026	200 medley	3:10.97	288
17 Apr 2026	Kungsbacka Spring Meet 2026	50 freestyle	33.85	339
17 Apr 2026	Kungsbacka Spring Meet 2026	100 backstroke	1:22.79	328
17 Apr 2026	Kungsbacka Spring Meet 2026	100 breaststroke	1:51.05	192
17 Apr 2026	Kungsbacka Spring Meet 2026	50 butterfly	41.06	210
17 Apr 2026	Kungsbacka Spring Meet 2026	200 freestyle	2:47.22	302
17 Apr 2026	Kungsbacka Spring Meet 2026	100 butterfly	1:38.74	174
17 Apr 2026	Kungsbacka Spring Meet 2026	50 breaststroke	49.69	202
17 Apr 2026	Kungsbacka Spring Meet 2026	50 backstroke	39.40	316
17 Apr 2026	Kungsbacka Spring Meet 2026	100 freestyle	1:17.70	294
14 Dec 2025	SK Hajen Klubbmästerskap 2025	50 butterfly	40.16	223
14 Dec 2025	SK Hajen Klubbmästerskap 2025	50 backstroke	40.11	249
14 Dec 2025	SK Hajen Klubbmästerskap 2025	50 breaststroke	51.66	165
14 Dec 2025	SK Hajen Klubbmästerskap 2025	50 freestyle	35.91	260
4 Oct 2025	Nereus Cup 2025	400 freestyle	5:51.24	285
4 Oct 2025	Nereus Cup 2025	50 freestyle	34.82	285