StadiumStadion Sieńsk
| Current capacity of the stadium |
| Standing | 10 600 |
| Seats | 6 700 |
| Tribune | 4 000 |
| Seats for sponsors | 100 |
| Fans attended |
| 16. 3. 2026 | Sieńsk-RKS Czarny Las | 16 823 |
| 12. 3. 2026 | Sieńsk- Jagiellonia Białystok | 18 963 |
| 11. 3. 2026 | Sieńsk-Senerchia | 18 465 |
| 9. 3. 2026 | Sieńsk-Radzyń podlaski | 18 857 |
| 5. 3. 2026 | Sieńsk-Beppu | 18 687 |
| 28. 2. 2026 | Sieńsk-Zwoleń | 19 037 |