Sem de Leeuw
Netherlands (NED)
December 2002 (MN4)
Personal Records
| 500m | 38,93 | 28 December 2019 | Inzell (GER) |
| 1000m | 1.17,07 | 17 November 2019 | Heerenveen (NED) |
| 1500m | 1.59,09 | 4 November 2019 | Heerenveen (NED) |
| 3000m | 4.17,22 | 24 November 2019 | Heerenveen (NED) |
Season Bests
| 100m | 10,93 | 10 March 2020 | Utrecht (NED) |
| 300m | 26,31 | 10 March 2020 | Utrecht (NED) |
| 500m | 38,93 | 28 December 2019 | Inzell (GER) |
| 1000m | 1.17,07 | 17 November 2019 | Heerenveen (NED) |
| 1500m | 1.59,09 | 4 November 2019 | Heerenveen (NED) |
| 3000m | 4.17,22 | 24 November 2019 | Heerenveen (NED) |
| 100m | 10,94 | 9 February 2019 | Utrecht (NED) |
| 300m | 25,95 | 12 March 2019 | Utrecht (NED) |
| 500m | 39,86 | 28 October 2018 | Heerenveen (NED) |
| 1000m | 1.18,60 | 18 November 2018 | Heerenveen (NED) |
| 1500m | 2.01,83 | 28 October 2018 | Heerenveen (NED) |
| 3000m | 4.17,77 | 19 November 2018 | Heerenveen (NED) |
| 100m | 11,44 | 6 March 2018 | Utrecht (NED) |
| 300m | 26,91 | 6 March 2018 | Utrecht (NED) |
| 500m | 41,27 | 3 February 2018 | Heerenveen (NED) |
| 1000m | 1.24,05 | 29 December 2017 | Inzell (GER) |
| 1500m | 2.07,17 | 20 January 2018 | Enschede (NED) |
| 3000m | 4.42,69 | 24 March 2018 | Heerenveen (NED) |
| 100m | 11,69 | 15 January 2017 | Utrecht (NED) |
| 300m | 27,81 | 15 January 2017 | Utrecht (NED) |
| 500m | 42,50 | 25 March 2017 | Heerenveen (NED) |
| 700m | 1.02,36 | 19 March 2017 | Utrecht (NED) |
| 1000m | 1.29,45 | 5 March 2017 | Utrecht (NED) |
| 1500m | 2.14,97 | 25 March 2017 | Heerenveen (NED) |
| 500m | 45,58 | 18 March 2016 | Heerenveen (NED) |
| 1000m | 1.34,35 | 18 March 2016 | Heerenveen (NED) |
| 500m | 50,35 | 18 March 2015 | Enschede (NED) |
| 1000m | 1.52,75 | 10 February 2015 | Utrecht (NED) |
| 500m | 56,87 | 27 March 2014 | Heerenveen (NED) |
Results
| Baankampioenschappen Utrecht Supersprint en Pure Sprint | Utrecht (NED) | 10 March 2020 | ||||||||||||||||
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| Recordwedstrijd Thialf | Heerenveen (NED) | 16 February 2020 | ||||||||||||||||
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| Zondagavond (CK Woerden) | Utrecht (NED) | 26 January 2020 | ||||||||||||||||
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| Landelijke Selectie NK Allround Junioren A en B | Tilburg (NED) | 18 - 19 January 2020 | ||||||||||||||||
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| Regioselectiewedstrijd ZW Jun. B (Breda / Den Haag) | Breda (NED) | 4 - 5 January 2020 | ||||||||||||||||
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Native Language Names