Info
| Last name | Koster |
| First name | Isere |
| Nationality |  Netherlands |
| Date of birth | 12-01-2007 |
| Age | 19 |
Schedule
| Date | Rank | Race | |
|---|---|---|---|
| 27-08 | DNF |  Druivenkoers - Overijse U19 (1.1) | |
 Bizkaikoloreak (2.NCUP) | |||
| 14-08 | DNF | Stage 1Abadiño - Abadiño (71.0km) | |
| Watersley Ladies Challenge (2.NCUP) | |||
| 38 |  Standings | ||
| 27-07 | 31 | Stage 3Watersley - Watersley (82.0km) | |
| 26-07 | 31 | Stage 2Watersley - Watersley (74.0km) | |
| 25-07 | 87 | Stage 1Munstergeleen - Watersley (6.0km) | |
| 13-07 | 60 |  Grand Prix Valromey Tour Féminin II (1.1) | |
| 11-07 | 60 | Grand Prix Valromey Tour Féminin (1.1) | |
| 24-06 | 5 | National Road Championships - Netherlands TT U19 (CN) | |
| 21-06 | 17 | National Road Championships - Netherlands U19 (CN) | |
| 25-05 | 47 | Ronde van Vlaanderen U19 (1.1) | |
| 11-05 | 36 | Gent-Wevelgem U19 (1.1) | |
| 16-03 | 61 |  Piccolo Trofeo Alfredo Binda - Valli del Verbano (1.NCUP) | |
| 12-01 | 8 | Dutch National Championships CX U19 (CN) | |