Klaas Berkhof
Netherlands (NED)
July 1981 (M40)
Personal Records
| 500m | 42,03 | 24 January 2004 | Erfurt (GER) |
| 1000m | 1.24,30 | 25 January 2004 | Erfurt (GER) |
| 1500m | 2.07,08 | 14 March 2000 | Heerenveen (NED) |
| 3000m | 4.29,22 | 15 November 1999 | Heerenveen (NED) |
| 5000m | 8.25,81 | 4 January 2002 | Alkmaar (NED) |
| 10000m | 18.37,15 | 3 January 2015 | Alkmaar (NED) |
Season Bests
| 500m | 45,68 | 6 January 2018 | Alkmaar (NED) |
| 1500m | 2.22,57 | 6 January 2018 | Alkmaar (NED) |
| 3000m | 5.18,85 | 24 February 2018 | Alkmaar (NED) |
| 500m | 44,77 | 28 January 2017 | Alkmaar (NED) |
| 1000m | 1.28,70 | 18 March 2017 | Alkmaar (NED) |
| 1500m | 2.19,06 | 28 January 2017 | Alkmaar (NED) |
| 3000m | 4.50,55 | 18 March 2017 | Alkmaar (NED) |
| 500m | 43,73 | 7 February 2016 | Alkmaar (NED) |
| 1500m | 2.13,31 | 7 February 2016 | Alkmaar (NED) |
| 500m | 43,66 | 17 October 2014 | Inzell (GER) |
| 1000m | 1.27,80 | 8 March 2015 | Alkmaar (NED) |
| 1500m | 2.13,99 | 7 March 2015 | Alkmaar (NED) |
| 3000m | 4.56,47 | 8 March 2015 | Alkmaar (NED) |
| 10000m | 18.37,15 | 3 January 2015 | Alkmaar (NED) |
| 500m | 43,86 | 28 December 2013 | Alkmaar (NED) |
| 1000m | 1.26,55 | 15 March 2014 | Alkmaar (NED) |
| 1500m | 2.13,10 | 5 January 2014 | Alkmaar (NED) |
| 3000m | 4.47,34 | 8 March 2014 | Alkmaar (NED) |
| 500m | 43,40 | 26 October 2012 | Inzell (GER) |
| 1500m | 2.13,98 | 26 October 2012 | Inzell (GER) |
| 3000m | 4.48,42 | 9 March 2013 | Alkmaar (NED) |
| 500m | 43,93 | 30 October 2011 | Alkmaar (NED) |
| 1000m | 1.29,27 | 30 October 2011 | Alkmaar (NED) |
| 3000m | 4.55,70 | 9 March 2012 | Alkmaar (NED) |
| 500m | 43,73 | 5 February 2011 | Alkmaar (NED) |
| 1500m | 2.16,76 | 8 January 2011 | Alkmaar (NED) |
| 500m | 44,11 | 7 November 2009 | Alkmaar (NED) |
| 1500m | 2.17,82 | 7 November 2009 | Alkmaar (NED) |
| 500m | 42,93 | 20 December 2008 | Erfurt (GER) |
| 1000m | 1.27,08 | 11 December 2008 | Enschede (NED) |
| 1500m | 2.11,72 | 20 December 2008 | Erfurt (GER) |
| 3000m | 4.34,88 | 21 December 2008 | Erfurt (GER) |
| 500m | 42,80 | 26 January 2008 | Erfurt (GER) |
| 1000m | 1.25,92 | 26 January 2008 | Erfurt (GER) |
| 1500m | 2.09,97 | 27 January 2008 | Erfurt (GER) |
| 3000m | 4.41,24 | 18 November 2007 | Alkmaar (NED) |
Results
| AIJC | Alkmaar (NED) | 24 February 2018 | ||||||||
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| AM(AIJC) | Alkmaar (NED) | 6 January 2018 | ||||||||
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| AIJC | Alkmaar (NED) | 18 March 2017 | ||||||||
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| AIJC | Alkmaar (NED) | 28 January 2017 | ||||||||
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| Clubkampioenschappen AIJC | Alkmaar (NED) | 7 February 2016 | ||||||||
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Native Language Names