| 1. Round | 26/08/2023 | Unionistas CF | - | Sestao River | 0:0 | ||||
| 2. Round | 03/09/2023 | Sestao River | - | SD Ponferradina | 0:1 | ||||
| 16. Round | 10/12/2023 | Deportivo La Coruña | - | Sestao River | 1:1 | ||||
| 17. Round | 16/12/2023 | Sestao River | - | CA Osasuna B | 2:1 | ||||
| 18. Round | 03/01/2024 | Real Unión | - | Sestao River | 4:2 | ||||
| 21. Round | 27/01/2024 | SD Ponferradina | - | Sestao River | 1:1 |
Spain