StadiumStadion Narwi
| Current capacity of the stadium |
| Standing | 11 400 |
| Seats | 7 900 |
| Tribune | 7 500 |
| Seats for sponsors | 100 |
| Fans attended |
| 16. 9. 2026 | Narew Ostrołęka-Sierpc | 3 906 |
| 12. 9. 2026 | Narew Ostrołęka-Poladowo | 3 666 |
| 7. 9. 2026 | Narew Ostrołęka-Pasłęk | 3 668 |
| 3. 9. 2026 | Narew Ostrołęka-Myślenice | 3 652 |