StadiumEstadio Monumental
| Current capacity of the stadium |
| Standing | 54 000 |
| Seats | 34 000 |
| Tribune | 21 000 |
| Seats for sponsors | 1 000 |
| Fans attended |
| 14. 7. 2025 | FC Colo Colo-Costa Calma | 22 695 |
| 11. 7. 2025 | FC Colo Colo-Manchester UFC | 29 680 |
| 10. 7. 2025 | FC Colo Colo-Segovia | 23 083 |
| 8. 7. 2025 | FC Colo Colo-FC Baník St. Albert | 28 857 |
| 8. 7. 2025 | FC Colo Colo-FC Bobby | 28 890 |
| 3. 7. 2025 | FC Colo Colo-Gimnástic de Tarragona | 22 377 |
| 1. 7. 2025 | FC Colo Colo-Aris Solún FC | 28 255 |
| 1. 7. 2025 | FC Colo Colo-Povoa de Varzim | 30 238 |
| 28. 6. 2025 | FC Colo Colo-Teruel | 22 669 |