| Athletes |
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Biographical data for: Marijn WIERSMA
| Classifications in season 2019/2020: |
| 13/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Ladies | | Overall Ranking: 17th, 500 meter: 21st, 1000 meter: 7th, 1500 meter: 13th | | 12/10/19 | Heerenveen NED | Invitation Cup | Ladies Div. B 500 | | 500 meter: 10th | | 01/11/19 | Salt Lake City USA | ISU Worldcup-1 | Ladies | | 1000 m: 30th, 1500 m: 23rd | | 09/11/19 | Utrecht NED | National League KNSB Cup 1 | Divisie A | | Overall Ranking: 23rd, 1000 meter: 24th, 1000 meter (2): 22nd | | 29/11/19 | Nagoya JPN | ISU Worldcup-3 | Ladies | | 1500 m (1): 27th, 1500 m (2): 17th | | 06/12/19 | Montreal CAN | Invitation Cup Canada | Ladies | | Overall Ranking: 27th, 500 meter: 53rd, 1000 meter: 51st, 1500 meter: 15th | | 04/01/20 | Leeuwarden NED | National Championships Netherlands | Dames | | Overall Ranking: 10th, 500 meter: 8th, 1000 meter: 10th, 1500 meter: 15th | | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Dames WKJ trial. | | Overall Ranking: 5th, TT 3 ronden: 4th, 500 meter: 6th | | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Dames WKJ trial | | Overall Ranking: 5th, TT 6 ronden: 3rd, 1000 meter: 7th | | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Dames WKJ trial.. | | Overall Ranking: 3rd, TT 9 ronden: 5th, 1500 meter: 3rd | | 08/02/20 | Nijmegen NED | National League KNSB Cup 5 | Divisie A | | Overall Ranking: 18th, TT 6 ronden: 17th, 1000 meter: 18th | | 07/03/20 | Leeuwarden NED | National Junior Championships Netherlands | Dames Junioren A | | Overall Ranking: 4th, 500 meter: 5th, 1000 meter: -, 1500 meter: 6th, 1500 m SF: 2nd |
| Results in season 2019/2020: |
| 333 meter |
| 32 | .382 | 18/01/20 | Leeuwarden NED | National League KNSB Cup 4 | (Time Trial) | |
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| 500 meter |
| 45 | .458 | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Halve Finales, Groep 1 | |
| 46 | .131 | 14/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Heats, Group 1 | |
| 46 | .165 | 08/03/20 | Leeuwarden NED | National Junior Championships Netherlands | Halve Finales | |
| 46 | .282 | 14/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Semi Final, Group 3 | |
| 46 | .554 | 04/01/20 | Leeuwarden NED | National Championships Netherlands | Kwart Finales | |
| 46 | .882 | 13/10/19 | Heerenveen NED | Invitation Cup | Semi Final, B |  |
| 46 | .954 | 14/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Quarter Finals, Group 2 | |
| 46 | .975 | 13/10/19 | Heerenveen NED | Invitation Cup | Final, C | |
| 47 | .020 | 13/10/19 | Heerenveen NED | Invitation Cup | Quarter Finals, A | |
| 47 | .111 | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Finale, A | |
| 47 | .241 | 05/01/20 | Leeuwarden NED | National Championships Netherlands | Halve Finales | |
| 47 | .408 | 08/03/20 | Leeuwarden NED | National Junior Championships Netherlands | Finale, B | |
| 47 | .502 | 05/01/20 | Leeuwarden NED | National Championships Netherlands | Finale, B | |
| 47 | .586 | 07/12/19 | Montreal CAN | Invitation Cup Canada | Heats, Group 1 | |
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| 666 meter |
| 1:01 | .927 | 18/01/20 | Leeuwarden NED | National League KNSB Cup 4 | (Time Trial) | |
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| 1000 meter |
| 1:29 | .854 | 01/11/19 | Salt Lake City USA | ISU Worldcup-1 | Heats | |
| 1:31 | .792 | 15/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Quarter Finals, Group 1 | |
| 1:33 | .579 | 15/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Semi Final, Group 1 | |
| 1:34 | .016 | 15/09/19 | Kolomna RUS | Open Russian Cup of Russian Skating Union | Heats, Group 1 | |
| 1:34 | .088 | 04/01/20 | Leeuwarden NED | National Championships Netherlands | Kwart Finales | |
| 1:35 | .807 | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Finale, A | |
| 1:35 | .852 | 18/01/20 | Leeuwarden NED | National League KNSB Cup 4 | (Time Trial) | |
| 1:36 | .036 | 09/11/19 | Utrecht NED | National League KNSB Cup 1 | Halve Finale, Groep 2 | |
| 1:36 | .969 | 09/11/19 | Utrecht NED | National League KNSB Cup 1 | Halve Finale, Groep 2 | |
| 1:37 | .807 | 19/01/20 | Leeuwarden NED | National League KNSB Cup 4 | Halve Finales, Groep 1 | |
| 1:39 | .502 | 09/11/19 | Utrecht NED | National League KNSB Cup 1 | Finale, Groep 4 | |
| 1:40 | .302 | 08/12/19 | Montreal CAN | Invitation Cup Canada | Heats, Group 1 | |
| 1:40 | .580 | 08/02/20 | Nijmegen NED | National League KNSB Cup 5 | Kwart Finales, Groep 1 | |
| 1:41 | .005 | 08/02/20 | Nijmegen NED | National League KNSB Cup 5 | Finale, Groep 4 | |
| 1:41 | .021 | 09/11/19 | Utrecht NED | National League KNSB Cup 1 | Finale, Groep 4 | |
| 1:41 | .538 | 08/02/20 | Nijmegen NED | National League KNSB Cup 5 | Halve Finales, Groep 2 | |
| P | 08/12/19 | Montreal CAN | Invitation Cup Canada | Quarter Finals, Group 2 | |
| P | 05/01/20 | Leeuwarden NED | National Championships Netherlands | Halve Finales | |
| YC | 08/03/20 | Leeuwarden NED | National Junior Championships Netherlands | Finale, A | |
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| 1500 meter |
| 2:23 | .487 | 01/11/19 | Salt Lake City USA | ISU Worldcup-1 | Quarterfinals | |
| 2:24 | .608 | 02/11/19 | Salt Lake City USA | ISU Worldcup-1 Error performing query 1a | | | |
