All countries
| 11. Round | Barakaldo | R. Union | details | 07.11.2026 16:30 | |||
| 1/64-finals | Portugalete | R. Union | POSTP. | details | 04.11.2026 | |||
| 10. Round | R. Union | Real Aviles | 0:3 (0:1, 0:2) | details | 31.10.2026 | |||
| 9. Round | R. Union | Lugo | 4:1 (1:0, 3:1) | details | 23.10.2026 | |||
| 8. Round | CD Extremadura | R. Union | 2:2 (0:2, 2:0) | details | 17.10.2026 | |||
| 7. Round | Ath Bilbao B | R. Union | 0:0 (0:0, 0:0) | details | 11.10.2026 | |||
| 11. Round | Barakaldo | R. Union | details | 07.11.2026 16:30 | |||
| 12. Round | R. Union | Cultural Leonesa | details | 14.11.2026 16:30 | |||
| 13. Round | AD Merida | R. Union | details | 21.11.2026 18:45 | |||
| 14. Round | R. Union | Arenas Getxo | details | 29.11.2026 17:00 | |||