StadiumStadion Calheta
| Current capacity of the stadium |
| Standing | 20 600 |
| Seats | 12 900 |
| Tribune | 7 700 |
| Seats for sponsors | 300 |
| Fans attended |
| 4. 10. 2025 | Siena-Anzio | 4 705 |
| 29. 9. 2025 | Siena-Minori | 4 840 |
| 25. 9. 2025 | Siena-AC Parma Academy | 4 781 |
| 20. 9. 2025 | Siena-Odra Wodzisław Śl. | 4 838 |
| 15. 9. 2025 | Siena-Nemoli | 4 884 |
| 13. 9. 2025 | Siena-San Biase | 4 819 |
| 10. 9. 2025 | Siena-Martirano | 5 467 |
| 8. 9. 2025 | Siena-Chioggia | 4 572 |
| 4. 9. 2025 | Siena-Rovigo | 4 837 |