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Isabella Josefine Petersen

born 2010 · female · 🇩🇰 Denmark · SvømmeKlubben SYD

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Results period: 2025/26 (current)2024/252023/242022/23All-time
Meets
17
Swims
95
Best FINA points
402

Progression — all-time

50 m backstroke 25 m pool
11 swims · best time 36.04 · 2.06 faster than the first swim
36.04 36.0037.0038.00 12.2309.2406.2503.26
100 m medley 25 m pool
11 swims · best time 1:18.19 · 5.77 faster than the first swim
1:18.19 1:18.001:20.001:22.001:24.00 12.2309.2406.2503.26
50 m butterfly 25 m pool
9 swims · best time 33.03 · 5.09 faster than the first swim
33.03 34.0036.0038.00 12.2309.2406.2503.26
100 m butterfly 25 m pool
8 swims · best time 1:15.91 · 18.38 faster than the first swim
National record (Denmark) · 55.10 1:15.91 1:00.001:20.00 12.2309.2406.2503.26
200 m medley 25 m pool
8 swims · best time 2:47.70 · 14.66 faster than the first swim
2:47.70 2:50.002:55.003:00.00 03.2410.2405.2512.25
100 m backstroke 25 m pool
7 swims · best time 1:17.10 · 0.84 faster than the first swim
1:17.10 1:18.001:20.00 09.2403.2510.2504.26
200 m backstroke 25 m pool
7 swims · best time 2:44.49 · 12.00 faster than the first swim
2:44.49 2:45.002:50.002:55.00 04.2411.2405.2512.25
400 m medley 25 m pool
6 swims · best time 5:51.93 · 39.00 faster than the first swim
5:51.93 6:00.006:20.00 03.2410.2404.2511.25

Road to the Olympics & national records

Season-best results from 2025/26 against Paris 2024 bronze, the qualifying standard (OQT) and the swimmer's national record.

Record sources: Denmark: Dansk Svømmeunion - Svømmetider / Danske rekorder (updated 12 Jul 2026)

EventPoolTimeTargetWOZMissing
200 medley 25 m pool 2:47.70 National record (Denmark) 2:07.08
record: Julie Hjorth-Hansen		 75.8% +40.62
200 backstroke 50 m pool 2:52.03 National record (Denmark) 2:10.27
record: Pernille Larsen		 75.7% +41.76
400 medley 25 m pool 6:01.19 National record (Denmark) 4:32.39
record: Julie Hjorth-Hansen		 75.4% +1:28.80
200 backstroke 25 m pool 2:45.10 National record (Denmark) 2:03.50
record: Pernille Larsen		 74.8% +41.60
100 medley 25 m pool 1:18.34 National record (Denmark) 58.17
record: Martine Damborg		 74.3% +20.17
50 butterfly 50 m pool 34.04 National record (Denmark) 25.24
record: Jeanette Ottesen		 74.1% +8.80
50 butterfly 25 m pool 33.30 National record (Denmark) 24.61
record: Martine Damborg		 73.9% +8.69
200 medley 50 m pool 2:56.82 National record (Denmark) 2:09.73
record: Julie Hjorth-Hansen		 73.4% +47.09
200 backstroke 50 m pool 2:52.03 Olympic bronze 2:05.57
record: Kylie Masse		 73.0% +46.46
100 backstroke 25 m pool 1:17.10 National record (Denmark) 55.99
record: Mie Ø. Nielsen		 72.6% +21.11
100 butterfly 25 m pool 1:16.06 National record (Denmark) 55.10
record: Jeanette Ottesen		 72.4% +20.96
200 medley 50 m pool 2:56.82 Olympic bronze 2:08.08
record: Kaylee McKeown		 72.4% +48.74

Personal bests

Personal bests are computed only from data available in this service — meets from 21 May 2022 – 9 Jul 2026. Earlier swims outside this range are not included.

EventPoolTimeFINA ptsWhere
50 m backstroke 50 m pool 40.00 302 3 May 2024 · Taastrup Open 2024
50 m backstroke 25 m pool 36.04 343 28 Jun 2025 · FysioDanmark Water Games 2025
100 m backstroke 50 m pool 1:22.16 336 25 Apr 2026 · Triton Open 2026
100 m backstroke 25 m pool 1:17.10 360 14 Mar 2026 · Spar Nord Cup 2026
200 m backstroke 50 m pool 2:52.03 366 25 Apr 2026 · Triton Open 2026
200 m backstroke 25 m pool 2:44.49 378 14 Sep 2024 · Ringsted Cup 2024
50 m breaststroke 50 m pool 45.25 267 25 Apr 2026 · Triton Open 2026
50 m breaststroke 25 m pool 43.36 280 15 Mar 2025 · SPAR NORD CUP 2025
50 m butterfly 50 m pool 34.04 369 25 Apr 2026 · Triton Open 2026
50 m butterfly 25 m pool 33.03 402 28 Jun 2025 · FysioDanmark Water Games 2025
100 m butterfly 50 m pool 1:19.36 336 25 Apr 2026 · Triton Open 2026
100 m butterfly 25 m pool 1:15.91 360 28 Jun 2025 · FysioDanmark Water Games 2025
50 m freestyle 25 m pool 32.08 365 15 Mar 2025 · SPAR NORD CUP 2025
100 m freestyle 25 m pool 1:10.12 368 15 Mar 2025 · SPAR NORD CUP 2025
200 m freestyle 50 m pool 2:45.76 310 3 May 2024 · Taastrup Open 2024
200 m freestyle 25 m pool 2:42.71 311 6 Jan 2024 · Sydbank Cup 2024
400 m freestyle 50 m pool 5:45.93 315 3 May 2024 · Taastrup Open 2024
400 m freestyle 25 m pool 5:19.12 380 15 Mar 2025 · SPAR NORD CUP 2025
100 m medley 25 m pool 1:18.19 377 18 Jan 2025 · Femern Bælt Cup 2025
200 m medley 50 m pool 2:56.82 362 25 Apr 2026 · Triton Open 2026
200 m medley 25 m pool 2:47.70 383 14 Mar 2026 · Spar Nord Cup 2026
400 m medley 50 m pool 6:16.82 345 9 May 2025 · Taastrup open 2025
400 m medley 25 m pool 5:51.93 398 28 Jun 2025 · FysioDanmark Water Games 2025

Recent swims

DateMeetEventTimePts
27 Jun 2026 FysioDanmark Water Games 2026 50 backstroke 37.10 315
27 Jun 2026 FysioDanmark Water Games 2026 100 medley 1:18.34 375
27 Jun 2026 FysioDanmark Water Games 2026 50 butterfly 33.30 392
27 Jun 2026 FysioDanmark Water Games 2026 100 backstroke 1:18.40 343
27 Jun 2026 FysioDanmark Water Games 2026 100 butterfly 1:17.48 339
25 Apr 2026 Triton Open 2026 200 backstroke 2:52.03 366
25 Apr 2026 Triton Open 2026 50 butterfly 34.04 369
25 Apr 2026 Triton Open 2026 200 medley 2:56.82 362
25 Apr 2026 Triton Open 2026 100 butterfly 1:19.36 336
25 Apr 2026 Triton Open 2026 50 breaststroke 45.25 267
25 Apr 2026 Triton Open 2026 100 backstroke 1:22.16 336
14 Mar 2026 Spar Nord Cup 2026 200 backstroke 2:45.10 373
14 Mar 2026 Spar Nord Cup 2026 100 butterfly 1:17.01 345
14 Mar 2026 Spar Nord Cup 2026 100 medley 1:19.42 360
14 Mar 2026 Spar Nord Cup 2026 200 medley 2:47.70 383
14 Mar 2026 Spar Nord Cup 2026 50 butterfly 33.63 380
14 Mar 2026 Spar Nord Cup 2026 100 backstroke 1:17.10 360
17 Jan 2026 Femern Bælt Cup 2026 400 medley 6:01.19 368
17 Jan 2026 Femern Bælt Cup 2026 50 butterfly 33.66 379
17 Jan 2026 Femern Bælt Cup 2026 100 backstroke 1:17.66 353
Swimmer comparison Compare → clear