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Demi Sierdsma
| Last name | Sierdsma |
| First name | Demi |
| Gender | Female |
| Birthdate | 02.1998 |
| Country | NED |
| 500m | 46,09 (Heerenveen, 02.02.2015) |
| 1.000m | 1.31,58 (Heerenveen, 31.01.2015) |
| 1.500m | 2.23,16 (Heerenveen, 08.03.2014) |
| 3.000m | 5.08,28 (Heerenveen, 31.01.2015) |
| Sprint | 91,880 |
| Mini Combo | 190,980 |
| Tiny Combo | 139,600 |
| Latest update in | 2015 |
NED