Koen Halfwerk
Netherlands (NED)
July 1986 (M35)
Personal Records
| 500m | 48,53 | 13 February 2011 | Nijmegen (NED) |
| 1000m | 1.37,49 | 13 February 2011 | Nijmegen (NED) |
| 1500m | 2.36,03 | 22 February 2009 | Nijmegen (NED) |
Season Bests
| 500m | 48,94 | 22 March 2012 | Nijmegen (NED) |
| 1000m | 1.38,76 | 22 March 2012 | Nijmegen (NED) |
| 500m | 48,53 | 13 February 2011 | Nijmegen (NED) |
| 1000m | 1.37,49 | 13 February 2011 | Nijmegen (NED) |
| 500m | 48,72 | 13 December 2009 | Nijmegen (NED) |
| 1000m | 1.38,84 | 25 March 2010 | Nijmegen (NED) |
| 500m | 49,44 | 26 March 2009 | Nijmegen (NED) |
| 1000m | 1.41,31 | 26 March 2009 | Nijmegen (NED) |
| 1500m | 2.36,03 | 22 February 2009 | Nijmegen (NED) |
Results
| Finale Races Lacustris | Nijmegen (NED) | 22 March 2012 | ||||||||||||
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| NSV Regiowedstrijd | Nijmegen (NED) | 13 February 2011 | ||||||||||||
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| IUT Lacustris | Nijmegen (NED) | 25 March 2010 | ||||||||||||
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| Gewestelijke Kampioenschappen Langebaan te Ede | Ede (NED) | 9 January 2010 | ||||||||||||
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| Regio-Wedstrijd | Nijmegen (NED) | 13 December 2009 | ||||||||||||
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Native Language Names