StadiumStade Joseph Marien
| Current capacity of the stadium |
| Standing | 11 500 |
| Seats | 7 200 |
| Tribune | 4 300 |
| Seats for sponsors | 100 |
| Fans attended |
| 30. 10. 2026 | Union Saint Gilloise-Nesvačilka | 3 625 |
| 30. 10. 2026 | Union Saint Gilloise-Lomec | 3 617 |
| 30. 10. 2026 | Union Saint Gilloise-Sukorady | 3 615 |
| 30. 10. 2026 | Union Saint Gilloise-PsychoS.T.A.R.S. | 3 614 |
| 29. 10. 2026 | Union Saint Gilloise-Anseremme | 6 611 |
| 28. 10. 2026 | Union Saint Gilloise-Lomec | 3 713 |
| 28. 10. 2026 | Union Saint Gilloise-Nesvačilka | 3 679 |
| 28. 10. 2026 | Union Saint Gilloise-Smilovice | 3 741 |
| 28. 10. 2026 | Union Saint Gilloise-PsychoS.T.A.R.S. | 3 721 |