StadiumJoseph Marien Stadium
| Current capacity of the stadium |
| Standing | 27 900 |
| Seats | 17 400 |
| Tribune | 10 500 |
| Seats for sponsors | 300 |
| Fans attended |
| 25. 2. 2026 | Union Saint Gilloise-Týnec nad Sázavou | 4 956 |
| 25. 2. 2026 | Union Saint Gilloise-Martínkovice | 4 877 |
| 24. 2. 2026 | Union Saint Gilloise-Martínkovice | 5 096 |
| 23. 2. 2026 | Union Saint Gilloise-Legia Warszawa | 4 515 |
| 22. 2. 2026 | Union Saint Gilloise-Libodřice | 4 933 |
| 20. 2. 2026 | Union Saint Gilloise-Chomle | 5 030 |
| 18. 2. 2026 | Union Saint Gilloise-Martínkovice | 4 897 |
| 17. 2. 2026 | Union Saint Gilloise-Libčany | 4 984 |
| 15. 2. 2026 | Union Saint Gilloise-Libodřice | 4 971 |