Klaas Poortinga
Netherlands (NED)
September 2000 (MN4)
Personal Records
| 500m | 40,39 | 27 October 2019 | Heerenveen (NED) |
| 1000m | 1.28,12 | 6 November 2017 | Heerenveen (NED) |
| 1500m | 1.58,64 | 18 September 2021 | Heerenveen (NED) |
| 3000m | 4.03,98 | 3 October 2020 | Inzell (GER) |
| 5000m | 7.00,43 | 11 September 2021 | Heerenveen (NED) |
Season Bests
| 5000m | 7.04,69 | 6 November 2022 | Leeuwarden (NED) |
| 100m | 11,52 | 13 March 2022 | Leeuwarden (NED) |
| 500m | 41,13 | 13 March 2022 | Leeuwarden (NED) |
| 1500m | 1.58,64 | 18 September 2021 | Heerenveen (NED) |
| 3000m | 4.07,94 | 11 October 2021 | Heerenveen (NED) |
| 5000m | 7.00,43 | 11 September 2021 | Heerenveen (NED) |
| 3000m | 4.03,98 | 3 October 2020 | Inzell (GER) |
| 500m | 40,39 | 27 October 2019 | Heerenveen (NED) |
| 1500m | 1.59,15 | 27 October 2019 | Heerenveen (NED) |
| 3000m | 4.07,54 | 18 November 2019 | Heerenveen (NED) |
| 100m | 11,43 | 24 February 2019 | Leeuwarden (NED) |
| 500m | 40,95 | 26 January 2019 | Groningen (NED) |
| 1500m | 2.01,89 | 10 February 2019 | Leeuwarden (NED) |
| 3000m | 4.10,16 | 4 February 2019 | Heerenveen (NED) |
| 5000m | 7.23,84 | 9 December 2018 | Leeuwarden (NED) |
| 100m | 11,71 | 26 October 2017 | Inzell (GER) |
| 300m | 27,34 | 26 October 2017 | Inzell (GER) |
| 500m | 42,74 | 28 January 2018 | Leeuwarden (NED) |
| 1000m | 1.28,12 | 6 November 2017 | Heerenveen (NED) |
| 1500m | 2.08,54 | 28 January 2018 | Leeuwarden (NED) |
| 3000m | 4.25,19 | 19 February 2018 | Heerenveen (NED) |
| 100m | 11,62 | 18 March 2017 | Leeuwarden (NED) |
| 500m | 43,91 | 19 February 2017 | Leeuwarden (NED) |
| 1000m | 1.28,39 | 28 January 2017 | Heerenveen (NED) |
| 1500m | 2.15,51 | 19 February 2017 | Leeuwarden (NED) |
| 3000m | 4.41,38 | 6 March 2017 | Heerenveen (NED) |
| 500m | 44,90 | 5 March 2016 | Heerenveen (NED) |
| 1000m | 1.32,65 | 17 October 2015 | Leeuwarden (NED) |
| 1500m | 2.17,26 | 20 February 2016 | Leeuwarden (NED) |
| 3000m | 4.53,25 | 22 February 2016 | Heerenveen (NED) |
| 500m | 46,96 | 16 November 2014 | Heerenveen (NED) |
| 1000m | 1.36,36 | 16 November 2014 | Heerenveen (NED) |
| 1500m | 2.24,96 | 24 January 2015 | Heerenveen (NED) |
| 500m | 47,51 | 20 January 2014 | Heerenveen (NED) |
| 1000m | 1.37,00 | 24 February 2014 | Heerenveen (NED) |
| 500m | 52,28 | 9 December 2012 | Heerenveen (NED) |
Results
| Trainingswedstrijd KNSB- en Topteams | Heerenveen (NED) | 7 October 2023 | ||||||||
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| Gewestelijke Wedstrijd + Supersprint | Leeuwarden (NED) | 6 November 2022 | ||||||||
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| Mass Start Competitie 2 | Heerenveen (NED) | 1 October 2022 | ||||||||
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| Hutspot Clubwedstrijd Ferwerter IIsclub | Leeuwarden (NED) | 13 March 2022 | ||||||||
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| Gewestelijke Wedstrijd Pupillen / A junioren en Ouder | Heerenveen (NED) | 11 October 2021 | ||||||||
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Native Language Names