StadiumStadion Narwi
| Current capacity of the stadium |
| Standing | 11 400 |
| Seats | 7 900 |
| Tribune | 7 500 |
| Seats for sponsors | 100 |
| Fans attended |
| 15. 6. 2026 | Narew Ostrołęka-Poladowo | 3 806 |
| 11. 6. 2026 | Narew Ostrołęka-Pasłęk | 3 831 |
| 7. 6. 2026 | Narew Ostrołęka-BORUTA Zgierz | 4 081 |
| 6. 6. 2026 | Narew Ostrołęka-Myślenice | 3 953 |
| 3. 6. 2026 | Narew Ostrołęka-Szadek | 4 437 |
| 1. 6. 2026 | Narew Ostrołęka-Kolno | 4 006 |