| Name: Douwe | Surname: BIERMA | Country: NED  | SEASON: 2012/2013 » |
| 500 m | |||||||||
| - | 40,13 | Douwe | BIERMA | 82-02-17 | NED | 13 | Heerenveen | 05-10-31 | |
| 1000 m | |||||||||
| - | 1.25,61 | Douwe | BIERMA | 82-02-17 | NED | 15 | Heerenveen | 99-03-09 | |
| 1500 m | |||||||||
| 2359 | 2216 | 1.57,56 | Douwe | BIERMA | 82-02-17 | NED | 5 | Heerenveen | 06-01-02 |
| 3000 m | |||||||||
| 1285 | 1196 | 4.05,75 | Douwe | BIERMA | 82-02-17 | NED | 1 | Heerenveen | 05-01-03 |
| 5000 m | |||||||||
| 955 | 902 | 6.58,13 | Douwe | BIERMA | 82-02-17 | NED | 2 | Heerenveen | 09-03-15 |
| Mini | |||||||||||||
| 4019 | 3798 | 163,079 | Douwe | BIERMA | 82-02-17 | NED | 40,13 | 1.25,61 | 1.57,56 | 4.05,75 | -- | -- | 06 |
| Small | |||||||||||||
| 1673 | 1558 | 162,087 | Douwe | BIERMA | 82-02-17 | NED | 40,13 | -- | 1.57,56 | 4.05,75 | 6.58,13 | -- | 09 |
