StadiumStadion Narwi
| Current capacity of the stadium |
| Standing | 11 400 |
| Seats | 7 900 |
| Tribune | 7 500 |
| Seats for sponsors | 100 |
| Fans attended |
| 16. 3. 2026 | Narew Ostrołęka-Kolno | 3 397 |
| 15. 3. 2026 | Narew Ostrołęka-Gorzów śląski | 3 519 |
| 12. 3. 2026 | Narew Ostrołęka-GKS KATOWICE Hooligans™ | 3 978 |
| 7. 3. 2026 | Narew Ostrołęka-Złoty stok | 3 975 |
| 2. 3. 2026 | Narew Ostrołęka-Tęcza Przasnysz | 4 034 |