| 1. Round | 26/08/2018 | CD Calahorra | - | SD Amorebieta | 2:0 |  |
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| 4. Round | 16/09/2018 | Real Oviedo B | - | CD Calahorra | 1:1 | |
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| 6. Round | 29/09/2018 | Real Sociedad B | - | CD Calahorra | 1:0 | ||||
| 8. Round | 14/10/2018 | Arenas de Getxo | - | CD Calahorra | 2:1 | |
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| 11. Round | 04/11/2018 | CD Calahorra | - | SCD Durango | 2:2 | ||||
| 12. Round | 11/11/2018 | Barakaldo CF | - | CD Calahorra | 1:2 | ||||
| 13. Round | 18/11/2018 | CD Calahorra | - | UP Langreo | 2:4 | ||||
| 17. Round | 15/12/2018 | Athletic Club B | - | CD Calahorra | 3:2 |
Spain