| Name: Thirza | Surname: SIERDSMA | Country: NED  | SEASON: 2019/2020 » |
| 500 m | |||||||||
| - | 43,06 | Thirza | SIERDSMA | 00-08-02 | NED | 5 | Heerenveen | 20-01-06 | |
| 1000 m | |||||||||
| 2314 | 2611 | 1.24,86 | Thirza | SIERDSMA | 00-08-02 | NED | 3 | Leeuwarden | 19-12-22 |
| 1500 m | |||||||||
| 1917 | 2397 | 2.09,86 | Thirza | SIERDSMA | 00-08-02 | NED | 1 | Heerenveen | 20-01-20 |
| 3000 m | |||||||||
| 2031 | 2852 | 4.38,45 | Thirza | SIERDSMA | 00-08-02 | NED | 4 | Heerenveen | 19-11-18 |
| Fast | |||||||||||||
| 2286 | 2625 | 128,776 | Thirza | SIERDSMA | 00-08-02 | NED | 43,06 | 1.24,86 | 2.09,86 | -- | -- | -- | 20 |
| Mini | |||||||||||||
| 2089 | 2543 | 175,184 | Thirza | SIERDSMA | 00-08-02 | NED | 43,06 | 1.24,86 | 2.09,86 | 4.38,45 | -- | -- | 20 |
| Sprint | |||||||||||||
| 2701 | 85,490 | Thirza | SIERDSMA | 00-08-02 | NED | 43,06 | 1.24,86 | -- | -- | -- | -- | 20 | |
