| 2. Round | 25/10/2020 | Athletic Club B | - | Racing Santander | 0:1 |  |
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| 3. Round | 01/11/2020 | Racing Santander | - | CD Alavés B | 3:0 | ||||
| 6. Round | 21/11/2020 | CD Laredo | - | Racing Santander | 0:0 |  |
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| 7. Round | 28/11/2020 | Racing Santander | - | Barakaldo CF | 3:0 | ||||
| 4. Round | 02/12/2020 | SD Leioa | - | Racing Santander | 1:0 | ||||
| 10. Round | 20/12/2020 | Arenas de Getxo | - | Racing Santander | 1:1 | ||||
| 8. Round | 03/01/2021 | Real Sociedad B | - | Racing Santander | 4:1 | ||||
| 11. Round | 10/01/2021 | Racing Santander | - | SD Amorebieta | 0:1 | ||||
| 9. Round | 13/01/2021 | Racing Santander | - | Real Unión | 1:3 | ||||
| 12. Round | 16/01/2021 | Club Portugalete | - | Racing Santander | 0:1 | |
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| 13. Round | 24/01/2021 | Racing Santander | - | Athletic Club B | 1:1 |
Uruguay