| Athletes |
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Biographical data for: Tamar KOOLWIJK
| Classifications in season 2021/2022: |
| 02/10/21 | Leiden NED | Hutspot Cup 3e | Junior D meisjes | | Overall Ranking: 17th, 500 meter: 17th | | 08/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Junior D Women | | Overall Ranking: 15th, 500 metre: 18th, 777 metre: 9th, 1000 metre: 20th | | 30/10/21 | Groningen NED | Autumn Tournament | Girls junior D | | Overall Ranking: 11th, 500 meter: 10th, 777 meter: 11th | | 07/11/21 | Alkmaar NED | Regiocompetitie West nr 1 | Divisie A | | Overall Ranking: 3rd, 500 meter: 3rd | | 12/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Junior D Women | | Overall Ranking: 25th, 500 metre: 24th, 777 metre: 31st, 1000 metre: 17th | | 06/02/22 | Utrecht NED | Regiocompetitie West nr 2 | Divisie A | | Overall Ranking: 3rd, 500 meter: 3rd | | 12/02/22 | Dordrecht NED | Regiocompetitie West nr 3 | Divisie A | | Overall Ranking: 6th, 500 meter: 6th | | 21/03/22 | Den Haag NED | Club Championships HVHW/DKIJV-NED | Junior D | | Overall Ranking: 3rd, 500 meter: 3rd, 777 meter: 3rd | | 26/03/22 | Leiden NED | Arie Ravensbergen Bokaal | Meisjes jun D | | Overall Ranking: 11th, 500 meter: 12th, 777 meter: 8th | | 27/03/22 | Dordrecht NED | Regiocompetitie West Finale | Divisie A | | Overall Ranking: 3rd, 500 meter: 3rd |
| Results in season 2021/2022: |
| 500 meter |
| 52 | .50 | 27/03/22 | Dordrecht NED | Regiocompetitie West Finale | Halve Finales, Groep 1 | |
| 52 | .614 | 07/11/21 | Alkmaar NED | Regiocompetitie West nr 1 | Finale, Groep 1 | |
| 53 | .180 | 06/02/22 | Utrecht NED | Regiocompetitie West nr 2 | Halve Finales, Groep 1 | |
| 53 | .230 | 06/02/22 | Utrecht NED | Regiocompetitie West nr 2 | Finale, Groep 1 | |
| 53 | .299 | 07/11/21 | Alkmaar NED | Regiocompetitie West nr 1 | Halve Finales, Groep 1 | |
| 53 | .60 | 27/03/22 | Dordrecht NED | Regiocompetitie West Finale | Kwart Finales, Groep 1 | |
| 53 | .80 | 21/03/22 | Den Haag NED | Club Championships HVHW/DKIJV-NED | Finale, Groep 1 | |
| 53 | .912 | 07/11/21 | Alkmaar NED | Regiocompetitie West nr 1 | Kwart Finales, Groep 1 | |
| 54 | .040 | 12/02/22 | Dordrecht NED | Regiocompetitie West nr 3 | Quarter Finals, Group 1 | |
| 54 | .19 | 26/03/22 | Leiden NED | Arie Ravensbergen Bokaal | Halve Finales, Groep 2 | |
| 54 | .456 | 09/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Final, Group 5 |  |
| 54 | .47 | 26/03/22 | Leiden NED | Arie Ravensbergen Bokaal | Finale, Groep 3 | |
| 54 | .530 | 12/02/22 | Dordrecht NED | Regiocompetitie West nr 3 | Final, Group 2 | |
| 54 | .60 | 30/10/21 | Groningen NED | Autumn Tournament | Semi Final, Groep 1 | |
| 54 | .631 | 06/02/22 | Utrecht NED | Regiocompetitie West nr 2 | Kwart Finales, Groep 1 | |
| 54 | .793 | 13/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Semi Final, Group 3 | |
| 54 | .88 | 30/10/21 | Groningen NED | Autumn Tournament | Quarter Finals, Groep 1 | |
| 54 | .905 | 13/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Final, Group 6 | |
| 55 | .057 | 09/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Semi Final, Group 3 | |
| 55 | .06 | 21/03/22 | Den Haag NED | Club Championships HVHW/DKIJV-NED | Halve Finales, Groep 1 | |
| 55 | .123 | 08/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Heats, Group 1 | |
| 55 | .24 | 02/10/21 | Leiden NED | Hutspot Cup 3e | Halve Finales, Groep 2 | |
| 55 | .30 | 02/10/21 | Leiden NED | Hutspot Cup 3e | Finale, Groep 4 | |
| 55 | .471 | 13/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Quarter Finals, Group 2 | |
| 55 | .49 | 30/10/21 | Groningen NED | Autumn Tournament | Final, Groep 3 | |
| 55 | .607 | 12/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Heats, Group 1 | |
| 1:04 | .40 | 27/03/22 | Dordrecht NED | Regiocompetitie West Finale | Finale, Groep 1 | |
| 1:08 | .38 | 02/10/21 | Leiden NED | Hutspot Cup 3e | Kwart Finales, Groep 1 | |
| 1:11 | .680 | 12/02/22 | Dordrecht NED | Regiocompetitie West nr 3 | Semi Final, Group 1 | |
| 1:18 | .79 | 26/03/22 | Leiden NED | Arie Ravensbergen Bokaal | Kwart Finales, Groep 1 | |
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| 777 meter |
| 1:24 | .52 | 21/03/22 | Den Haag NED | Club Championships HVHW/DKIJV-NED | Finale, Groep 1 | |
| 1:25 | .211 | 08/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Quarter Finals, Group 1 | |
| 1:25 | .62 | 26/03/22 | Leiden NED | Arie Ravensbergen Bokaal | Finale, Groep 1 | |
| 1:25 | .817 | 12/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Semi Final, Group 1 | |
| 1:26 | .049 | 10/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Semi Final, Group 1 | |
| 1:26 | .288 | 12/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Quarter Finals, Group 1 | |
| 1:26 | .558 | 10/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Final, Group 2 |  |
| 1:26 | .594 | 09/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Quarter Finals, Group 1 | |
| 1:27 | .061 | 08/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Final, Group 3 |  |
| 1:27 | .792 | 08/10/21 | Amsterdam NED | StarClass-1 (CD-1) | Semi Final, Group 2 | |
| 1:28 | .47 | 21/03/22 | Den Haag NED | Club Championships HVHW/DKIJV-NED | Halve Finales, Groep 1 | |
| 1:30 | .048 | 14/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Final, Group 7 | |
| 1:30 | .35 | 30/10/21 | Groningen NED | Autumn Tournament | Final, Groep 2 | |
| 1:32 | .061 | 13/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Quarter Finals, Group 1 | |
| 1:41 | .505 | 14/11/21 | Bergamo ITA | StarClass-3 (CD-2) | Semi Final, Group 3 | |
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| 1000 meter |
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| 2000 meter relay |
| 3:36 | .245 | 07/11/21 | Alkmaar NED | Regiocompetitie West nr 1 | Finale, Groep 1 | |
| (DIV A - T4: Tinne Bolsius, Tamar Koolwijk, Mijke Lammers, Femke Venema) |
| 3:37 | .40 | 27/03/22 | Dordrecht NED | Regiocompetitie West Finale | Finale, Groep 1 | |
| (Team A4: Lisa Den Hertog, Bo Hoogvorst, Tamar Koolwijk, Mijke Lammers) |
| 4:12 | .290 | 06/02/22 | Utrecht NED | Regiocompetitie West nr 2 | Finale, Groep 1 | |
| (A2: Bo Hoogvorst, Tamar Koolwijk, Ishan Olden, Loek Ter Hart) |
| 4:17 | .04 | 26/03/22 | Leiden NED | Arie Ravensbergen Bokaal | Heats, Groep 1 | |
| (DKIJV: Tamar Koolwijk, Dieuwertje Lehmann, Maud Van Coevorden, Isis Van Etten) |
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