Koen
MARSMAN
Nationality
NED
Discipline
AQUA and Olympic medals
Personal Best Results
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| Event | Time | Medal | Pool Length | Age* | Competition | Comp Country | Date |
|---|---|---|---|---|---|---|---|
| Men's 50m Freestyle | 23.07 | - | 25m | 19 | 33rd International Meeting of Saint-Dizier (25m) |
|
12/10/2025 |
| Men's 100m Freestyle | 48.88 | - | 25m | 20 | 2025 Dutch National Championships (25m) |
|
19/12/2025 |
| Men's 100m Freestyle | 48.88 | - | 25m | 19 | 2025 Dutch National Championships (25m) |
|
24/10/2025 |
| Men's 200m Freestyle | 01:46.35 | Silver | 25m | 18 | Belgian National Championships (25m) |
|
11/11/2024 |
| Men's 400m Freestyle | 03:51.99 | - | 25m | 20 | 2025 Dutch National Championships (25m) |
|
21/12/2025 |
| Men's 100m Butterfly | 56.26 | - | 25m | 18 | Drachten Qualification Meet |
|
20/10/2024 |
| Men's 200m Butterfly | 02:07.48 | - | 25m | 16 | 52nd International Swimming Festival |
|
15/10/2022 |
| Men's 100m Medley | 01:00.93 | - | 25m | 16 | 2021 Dutch National Championships (25m) |
|
05/12/2021 |
| Men's 50m Butterfly | 26.20 | - | 25m | 18 | Belgian National Championships (25m) |
|
10/11/2024 |
| Men's 200m Medley | 02:02.57 | - | 25m | 18 | Belgian National Championships (25m) |
|
10/11/2024 |
| Men's 400m Medley | 04:24.32 | - | 25m | 18 | Belgian National Championships (25m) |
|
09/11/2024 |
| Men's 4x100m Freestyle Relay | 03:16.15 | Silver | 25m | - | 2025 Dutch National Championships (25m) |
|
21/12/2025 |
| Men's 4x200m Freestyle Relay | 07:06.99 | Gold | 25m | - | 2025 Dutch National Championships (25m) |
|
19/12/2025 |
| Men's 4x100m Medley Relay | 03:37.30 | - | 25m | - | 2025 Dutch National Championships (25m) |
|
20/12/2025 |
| Men's 50m Freestyle | 23.94 | - | 50m | 19 | 2025 Dutch National Championships (50m) |
|
15/06/2025 |
| Men's 100m Freestyle | 51.42 | - | 50m | 19 | 2025 Dutch National Championships (50m) |
|
13/06/2025 |
| Men's 200m Freestyle | 01:50.08 | - | 50m | 18 | Eindhoven 2024 |
|
11/04/2024 |
| Men's 400m Freestyle | 03:58.88 | - | 50m | 19 | 2025 Dutch National Championships (50m) |
|
12/06/2025 |
| Men's 50m Breaststroke | 30.38 | - | 50m | 20 | 2026 Giant Open (50m) |
|
22/03/2026 |
| Men's 50m Butterfly | 26.03 | - | 50m | 18 | NED Championships 2024 |
|
15/06/2024 |
| Men's 100m Butterfly | 55.54 | - | 50m | 18 | NED Championships 2024 |
|
15/06/2024 |
| Men's 200m Butterfly | 02:09.00 | - | 50m | 17 | Eindhoven 2023 |
|
06/04/2023 |
| Men's 200m Medley | 02:10.88 | - | 50m | 17 | Eindhoven 2023 |
|
08/04/2023 |
| Men's 400m Medley | 04:37.64 | - | 50m | 17 | Eindhoven 2023 |
|
07/04/2023 |
| Men's 4x100m Freestyle Relay | 03:23.30 | Silver | 50m | - | 2025 Dutch National Championships (50m) |
|
13/06/2025 |
| Men's 4x200m Freestyle Relay | 07:26.12 | Silver | 50m | - | NED Championships 2024 |
|
14/06/2024 |
| Men's 4x100m Medley Relay | 03:45.72 | Bronze | 50m | - | 2025 Dutch National Championships (50m) |
|
15/06/2025 |
| Mixed 4x100 Freestyle Relay | 03:35.23 | Silver | 50m | - | NED Championships 2024 |
|
14/06/2024 |
